I agree with that assessment.
I believed Specter had given Frist his word back in May, but my degree of needing to simply trust Frist (and Specter) was much greater than the degree I needed with, for example, the amount of childlike trust I needed in the President's assurance that Miers would fit the bill. I had concerns, though, that Voiny or some other RINO not as visible would backdoor Frist in place of Specter. I am almost certain that Graham and DeWine had the same concerns I did.
Now, though, that someone that Specter supported for the USSC was mistreated, and the way that we've now given up the "High Ground" that the structure of The Constitution demands that every nominee by the executive should be given a vote on the floor of the Senate, all bets are off as to how Specter, and other RINOs in addition to the most prominent six, would vote on the Constitutional/Nuclear/Byrd option.