Advanced Manipulation

So - if two characters have advanced manipulation, and one of them hits a 12 on a manipulation role, that NPC is no longer a threat, and becomes an ally of the manipulator.  What happens if the second character manipulates that NPC, and hits a 12?

I believe in that case your players are creating PC-NPC-PC triangles for you.
Pat yourself on the back, sit back and enjoy the show.

Yeah, that's fantastic! That NPC gets to be the tennis ball, with maybe all kinds of cross-double cross-counter double cross shenanigans! This'll be fun to watch.