I do not think that boehner will cave. ALL of the real major Conservative pundits have warned them... even their best buddy Sean Hannity is talking third party. They do not want that any more than we do... but they know we will go our separate way if they cave... and we will too!
I think Hannity is being "edgy" to shore up his ratings. He's difficult to listen to for any length of time (has been for some time now) - just repeated rapid shot, rote listing of points and being the line judge (maybe more the ball kid) on the tennis court of talking heads.