Nope, while he did not like being mind controlled by Arthas, Tevruden actually likes the power that comes from being a former herald of the Lich King.

Which brings up an interesting point, there is a possibility that if Arthas had said “Hey you’re pretty good; if you come back to the scourge we have full benefits and I’ll make you even more powerful than you were before.” Tev would have seriously considered it, and taken him up on that.

“Scourgelord Tevruden Dawnspear” has a nice ring to it, after all.