Sorry for being dense about this but I still don't get jesse's blow up.
So I understand that he realizes that it was Huell who took the ricin cig. from saul/walt's instruction. Is he pissed because
He realizes how much he was played by Walt, eg. the scene where Walt and Jesse were both looking for the ricin at his house. Guess there was a tiny part of Jesse that believe Walt still cared, but this took that all away and realized he was played by Walt the entire time.
I don't recall, but after Jesse realized that Brock was not poison by ricin, what was he's reaction? Also, what did Walt ask Jesse to do by convincing him that Gus was the on that poisoned Brock. I was imagine that Jesse would know Walt was lying after realizing Brock was not poison by ricin as Walt had said.
Remember back when Walt and Jesse were working with Gus. Gus and Walter had a falling out, Jesse and Walter were sort of falling out, and Jesse was starting to trust Gus more and more, but knew that Gus tolerated using children to sell his drugs (and getting one of the kids killed as a result).
Walter new Gus was going to kill him and have Jesse do the cooking, so he needed a way to get Jesse back on his side and somehow create an opening for him to get close to Gus in order to kill him first, since in a previous episode Walt was told by one of Gus' henchmen that he would "never see Gus again."
Walt makes a vial of ricin and gives it to Jesse since Jesse was still able to get close to Gus. Jesse doesn't use the ricin to kill Gus, so Walt hatches another plan to turn Jesse on Gus for good.
Walt has Saul's bodyguard Huell pickpocket the ricin cigarette from Jesse.
Off-camera, he creates poison from the Lily of the Valley plant growing in his backyard, and injects it into a juicebox that Brock drinks from.
Brock falls ill, Jesse realizes that the ricin cigarette is missing, and confronts Walt, saying that he had Saul/Huell pickpocket his ricin so he could use it to poison Brock to spite Jesse. Walt convinces Jesse that he would never poison a child, and that Jesse's ricin cigarette must have been stolen by Gus while in the lab. Walt suggests to Jesse that Gus is trying to frame Walt by getting Jesse to think Walt was the one who poisoned Brock, for which Jesse would kill Walt. Gus already had a history of willingly using children to get what he wants, so Jesse, convinced now that Gus is playing him and the one that actually poisoned Brock, sides with Walt.
So now Walt has his opening. He tells Jesse to stay in the hospital, and to say to Gus that he won't leave the hospital to go cook unless he gets a personal visit from Gus. So Gus relents and drives to the hospital to personally visit Jesse. Walt uses this time to attach a bomb to Gus' unattended vehicle.
This attempt fails since something about this whole setup seems awkward to Gus, and he never gets in the car.
Jesse then tells Walt that Gus visits Hector Salamanca to taunt him at the nursing home, so that's where Walt goes to kill him.
After Gus dies everyone finds out that it was actually Lily of the Valley that Brock was ill from, not ricin. Walt convinces Jesse that Gus had to die anyway, even though now it appears that Gus actually hadn't poisoned Brock.
Walt hides the ricin behind the power outlet, creates a fake ricin capsule out of salt, and then "finds" it in the Roomba as they are searching for the missing cigarette at Jesse's house. In this way Walt wraps up his deception. And Walt wins. Gus is dead. Jesse is on his side again. And Walt still has Jesse as a trusty sidekick (he didn't actually use ricin to poison Brock because he knew that Jesse would tell the police that it was ricin in the hopes of saving Brock and the police would have arrested him if it actually turned out to be ricin).
Forward to the most recent episode in the desert. Jesse is thoroughly pissed off at Walt for playing him and stringing him along. He's at the breaking point. But the hug from Walt convinces the emotional Jesse to just forgive him this one last time and disappear to create a new life.
On his way out of Saul's office to meet the guy who's going to take him away, Huell pickpockets Jesse's bag of weed. While waiting to get picked up, Jesse realizes that Huell had pickpocketed his weed, and the epiphany is right there as he's staring at the only thing left in his pockets, a packet of cigarettes:
- Huell HAD pickpocketed his ricin cigarette
- Walt HAD poisoned Brock, a child
- Walt HAD used this missing ricin cigarette to convince him that Gus had poisoned Brock
- thus, Walt HAD played him against Gus and HAD used him to kill Gus
- Walt HAD been playing him this entire time
And this was the last straw for Jesse.