You don't have to be an asshat about everything. There are many reasons someone might run from the police. Maybe he had an outstanding warrant, maybe he was just afraid, maybe he stole a purse ... or maybe he was wearing a bomb.
Sorry, but this is the wrong time to be wearing a winter coat with wires hanging out of it. Not to mention running through a station.
If this guy was joking, he still deserved to get shot. I suspect he was not, and he got exactly what he deserved.
Onto the real subject. It seems as if there was a series of planned events and there may be more coming. The explosives in the second attempt did seem to match those in the first. So Britain has some real issues with a possibly large group of militants.
Time for them to actually start cracking down. Even Musharref (sp) told Blair that it is time that Britain looks inside for their problems. Granted, a lot of the bombers are trained in Pakistan, but there is definitely a support network in Britain - a strong one at that.
Europe needs to be on alert. I suspect that these types of attacks will begin occuring all over the place. Europe for too long has allowed too many Mulsims in while not attempting at all to help them assimilate.
That is the one thing the US does have going for it. Muslim immigrants do well here on average, and assimilate well. Successful people are usually much less willing to blow themselves up. This is a reason why Al Queda has had a difficult time actually recruiting insiders here - every known attempt has been met with failure.