I don't think so. I think Trump is already looking at the 2018 map and will dare Congressional Republicans to support big government programs. There will be a sea of GOP primary opponents next year, and end of September is the perfect time to start preparing for office.
Oh yeah, the incumbents will each face 9-17 primary opponents, and every last one of them will be re-elected, and there is no sane reason to expect people who never, ever, EVER fight to all of a sudden fight.
They are going to lose and then tell us how they won.