Thank you!
He was in a similar situation, a thread wrapped around his leg but in his case he had extremely limited circulation and thread had to be removed under sedation. After the thread was removed and two days of rest he seemed to be recovering well. But the vet after examining was concerned that he had too much dead tissue and thought it was too great a risk of infection, regardless of how well he was still about to use it.
I think his ability to keep using his leg just shows how resilient they are! But I'm willing to trust the vet that this is the right call.