Be really pissed off and take his saber to a bunch of trees. Afterwards he'd be totally fine with it because at the very least, Basco needs closure... and if Basco did something to hurt Marvelous for this "closure", he'd rip into him, losing battle or not. It would be an automatic response and not so much a chosen one. The Marvelous from that time isn't his, so what can he do?

Not that this would ever happen, but if Joe did let him touch him, would he?