When the democrats filibuster every other nominee he sends up for anything, what do you expect the republicans in the senate to do? While Frist proved to be very short-sighted in not implementing a rule change at the beginning of this session to eliminate filibusters on the confirmation of all presidential appointees to force an up or down vote on all appointees that make it out of committee, there is no validity to blaming the republicans for the obstruction of the democrats.
Over at DU, they have a picture of Frist up. They are praising him on his switch concerning stem cell.