No, Ryan has simply made a political calculation that Trump will lose and he Ryan, has a race of his own to win and a future to consider, and disassociating from Trump will be in his own interest. This is purely a calculation of self interest.
He may yet be wrong in his calculation; but don't be surprised at it. Ryan is a politician and this is just what they all do.
“He may yet be wrong in his calculation; but don’t be surprised at it. Ryan is a politician and this is just what they all do.”
Please name the Republican politicians who disavowed McCain and Romney. And when is the last time a Democrat ever disavowed a fellow Dem at the national level?