I believe Saturday was the first day Ryan was going to appear with Pence or Trump. It seemed preplanned that Ryan would use this rally to target Trump.
If Trump loses, I think Ryan and the Republicans are going to be surprised how bad turnout will be in 2018.
the establishment would love nothing more than to totally discourage the Republican electorate to not turn out. That would be a cheap win for the establishment ruling elite and their boot licking servants in DC.