I don't believe your view is correct.
Specter was tolerated by the Republicans here in Pa. and we certainly never "loved" him. Now that he's a Rat that tolerance is gone.
Being the astute politician he is he was well aware of that fact, prompting him to switch parties.
He may get beat in the Rat primary prompting him to run as an independent. That IMHO would be the best thing that could happen as I stated in post# 111.
As I said last week, The Dems would do a bait and switch and get him to turn, then knife him in the back to get rid of him in time for next year. Even a kindergartner could see that coming, Arlen really must be completely thick.