If it's the robot I think it is, then

a) it's retired and hasn't competed at an event since 2009, and
b) its successor is built like a tank.

While a brushless weapon may make some dents in it or knock a cable loose or a panel off, there's not a hope in hell of it requiring a binbag. Can't remember the last time a spinner of any sort did such an amount of damage to a well-built robot that a bag was required or the robot was considered destroyed.

Also, while the details behind this desire of yours is none of my business, I personally believe that serious approaches of 'revenge' and 'payback' should absolutely not be brought to an event and/or into the arena.

This sport is all about having fun, socialising with people whose company we enjoy and getting anyone and everyone interested and excited about engineering. Using it as a platform to settle old unresolved issues is doing the sport a dis-service in my eyes and has the potential to create ill-feeling among people. Such things would be best left at the door and resolved (or otherwise) through another medium.

Just my two cents.