I first want to say I appreciate your honest examination of your own beliefs and that movement you appear to identify with (or at least did identify with). It's refreshing!
Yes though, I believe the Tea Party was almost entirely an anti-Obama movement. While it is true that the Tea Party went after Republican incumbents, I believe they did so because those incumbents were insufficiently combative towards Obama. I'm sure there were members who genuinely cared about deficits more than anything else and still do. (it sounds like you might be one of them!) I do not believe that represented the median Tea Party Member. Sure they might have SAID that's why, but the proof is in the pudding. Republicans had the opportunity to massively cut spending and not only did they decline to do so, they went the other way, ramping up spending and exploding the deficit. I haven't heard a peep from the Tea Party about that.