Absolutely not.
Brent Vigen was obviously not the only problem during his time in Laramie, but he was certainly a big part of it. Let's not start trying to revise history just because he's gone and we still have various issues.
Firstly, Vigen was handed the keys to a Montana State program that was already in very good shape with a lot of talent. Secondly, FCS is an entirely different animal, and as we've seen, the schemes and philosophies that are often successful at that level don't always translate to the FBS level.
I'm as irate at anyone over our current offensive issues, but I've got NO desire to go back to Brent Vigen's offenses. I'm also firmly on the "Fire Bohl" train, but Vigen is NOT the play.
(Neither is Entz, by the way, in case someone wants to go down that road.)
The only Laramie retreads (or folks from the Bohl tree in general) I'd even remotely consider are Hazelton (if MSU continues to struggle defensively and he gets canned, we could theoretically offer him the house and the car...but somehow I think someone will outbid us) and Dickert (who isn't ever coming back to the G5 now that he's had success as a P5 head coach; that's a pipe dream).