How interesting that the Dems are critical of Comey's firing when not so long ago they thought so little of him and believed he should have been fired for how he handled the Clinton email case. Now they are worried that the Russian probe might go away without Comey's efforts. 
Comey's was not just terminated. He was decapitated. Firing him while on the road was terribly insensitive. He had great relationships in the agency but was unable to say good bye. IMO it could have been done in a more professional manner. The way this was done, he will be toxic for awhile. Politics is a cruel profession and often hurts. And no one is immune from being tossed aside. No one!