Re: [After all are settled in...]
Ah, you mean Tack? He's been an informant who wants out of his accidental dealing with Queen. Isolating him until her symbol is out of the picture would be the proper course of action. He is not as affected as some of the other Ophiuchus she has managed to get her claws--should I say teeth instead?--into.
He would make a better ally than enemy, but I will say that he's a survivalist for someone his age. But I think your taking consensus of the sutuation will allow him to judge for himself which side would be the better to choose.