I was given his purportedly current email address.
I sent him a friendly email asking if he wanted his records, and that he could pick them up if he'd like.
We'll see what happens. I'd actually prefer to give them back to him. For me the loan thing is water under the bridge. Not that I'd be lending him money again :-) But it doesn't help to dwell on that stuff and even very good people can get in to that kind of trouble. Apparently, talking to another friend who knew what was going on, his mental health issues were flaring up at the time of very high stress.
For me the best result would actually returningi the records and being at least on good terms with my old pal again, vs carrying spite or even having to get rid of the records. I don't know if he's going to respond, though.

