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You can remove yourself from his accounts by contacting the 3 bureaus directly. You don't have to wait for him to do it or anyone else. You're entitled to a free annual report, so get them and then report the inaccuracies on them. All you have to do is tell the bureaus that the accounts aren't yours, you're simply an authorized user and have no financial responsibility for them. They'll review your request and should be removed in a few weeks.
Good luck with your credit rebuild and life in general.
That shouldn't matter as an authorized user. AUs aren't financially responsible in any way shape or form for the account.