When a business coach shits all over a prospect on the Internet and forgets that other people exist there, too. This video makes me think the prospect's ethical concerns have some validity.
Glad you said medical field.... I thought it could have been Trump by that point - trouble with memory and not taking on advice. Can't speak for everyone, but I would have appreciated being reminded of a previous encounter. I know my memory limitations so wouldn't have felt embarrassed, I would have just acknowledged my head like a sieve.
I appreciate you being sure he meant you, but it's not probable he spoke to multiple coaches and one of them hit all of those points but vibed badly with him on the 'ethics'? If it really was you, why do you think he loved your vibe now but had a bad recollection of you? The only thing I can think is he wanted to blame you for him not being ready then, but still seems strange to me. Would be fun if you update this later either way.