The Tea Party will do what it wants. Rush does not speak for them nobody does.
And neither does Paul or his paulbots.
When did Rush ever claim to speak for the Tea party?
I've been to one helluva lot of tea parties coast to coast. Every one I attended was loaded to the gills with veterans and military people who proudly defend America from all enemies foreign and domestic. Doubtful that many grassroots tea party folks share Ron Paul's isolationist foreign policy views. Oh, yeah, there's always a smattering of Ron Paul signs present, but they are the minority.
And Ron Paul is not picking up much tea party support in the polls either:
http://www.gallup.com/poll/151355/Gingrich-Romney-Among-GOP-Voters-Nationwide.aspx