When the professor rolls "very stupid" he isn't just sitting there drooling like most other trolls, but is actually standing (or kneeling in the thinker pose as it might be) contemplating the meaning of life and solving complex quantum mechanics problems in his mind.
It's still not any better for his team of course, but at least it helps him sleep at night knowing that he corrected a error in the general theory of relatively while the ball carrying hobgoblin he was meant to be protecting was brutally killed.

PS: I just noticed his skill "Always Hungry" appears to be graphically bugged, as it should actually read "Always Hungry for Knowledge".