They could just tie him up, pull some frilly underthings over his naughty bits, then maybe add ribbons and make-up and some artistic modifications to the rest of his suit before sending him toddling back home. Just one way this could be kept as something less horrible than rape, that would still have sexual overtones and make Spy think twice before coming back. Imagine what his teammates will think when he turns up handcuffed, with clothes pegs on his nipples.