I don’t think that is correct.
I think he is working on the theory that he has so far done very well with McCarthy and hopes to do the same with her.
My own opinion is that McCarthy is so corrupted by his mad ambition to become president that he can be managed to a degree. I doubt that she can be managed in the same manner.
Do you remember what happened to the tea party? They won in with the best of intentions and to congress and 1 by 1 they were co-opted and corrupted by insiders in their own party and from outside by the government the deep state. I fear trump is on the same road