My only encounter with Cmustard is when I ran into him coalt on the deck and he did a Split-S on the merge (my guess to run to his base that was nearby).  Unfortunately, it's not a very smart idea to do a Split-Arse escape when you have less than 500ft of air between you and the ground.  Haven't seen him in the MW since that little debacle a few months ago.
ack-ack