Which will represent him out of circulation for a week...
If we're lucky. Then he will fully be in Sun Liling hand, and all of his skills will go to supporting her and hurting us. It's literally worse then where we are now. So no, don't pretend that's a solution that actually solves the problem he represents. Anyone arguing it is, is being deeply dishonest at this point. We've had repeated examples of it not sticking.
Sun Liling attempting to break him out would be actually rather useful - it ties her more fully to someone most of the sect dislikes (and that she herself has
claimed to have disavowed) and has a very real risk (note that her own support has collapsed) of failure.
And that's assuming she would - without his resources and followers, how useful
is he to her?
Of course, even assuming he
does escape from such a fate... is he going to try an exact
REVENGE... or is he going to keep his head down and avoid provoking the crazy duo yet again*? After all, if he stays hidden and works on his production project, he can either get in to the inner sect or at least re-establish his power base after the crazy year has graduated to the inner sect.
* Because so far it's been a loss every time. He helps Sun Liling with one of her major attacks... then, a while later, Ling Qi sneaks into his bases and loots his stuff. He gives Sun Liling intel on Ling Qi (for free!) when he's asked for it... and Liling doesn't manage to beat the thief up and loses a lot of her own support to boot. He manages to block her from doing a mission (probably costing him some qi and time)... and she promptly does yet more missions without him able to interfere. And then sics Meizhen on the remains of his organization, leading to the pair hunting him down and looting him again.
He can see a pattern - and I wouldn't at all be surprised if he just lays low in the case of an escape. After all, Ling Qi and Bai Mezihen have to worry about Sun Liling and company, as well as other competitors for the tournament. He can just quietly work on his term project or just wait for them to graduate and be out of his hair.