Sled would not rev above idke

So something weird happened today was ripping through the trees and finished a pretty decent hill idled down to the flat and the sled would not rev above 4000rpm. Shut it down let it sit for 10 min same thing managed to limp it down to main trail and slowly it got better and better till bang it was spot on again. What do u guys think, almost felt like a bad plug or it was stuck in limp mode, but there were no lights or warning chims

More than likely snow or ice was blocking the throttle from returning back to zero.

Ya I guess but it's weird there were 12 other xm' sand 3 turboed cats I'm the only one that had issues