I haven't seen anything in print quoting what Dean said--Brit Hume's program on Thursday evening ran the clip which included the exchange with a student during which Stalinism was invoked. Brit prefaced showing the clip with a comment about how people might think Dean's "temper" was resurfacing.
I saw that clip. Dean was very close to blowing his top because a student actively disagreed with him. I maintain that Dean will lose it in a debate before the primaries.
Dean is on record as vindictive and arrrogant, based on his record with the Vermon legislature. I want Americans to really get to know him.