Jeez dude, that's a mess
Not really "here's a solution" post, but a suggestion. Apologies if you're already doing this. Are all 4 other wheel nuts still fitted? If not, I'd refit them. By tightening the other 4 up, it may release a little pressure on the mangled one. Whereas if you've just hot this one left holding the wheel on, it'll be harder to release the tension.
Just a thought Best of luck mate.