Looks like he scammed more than just that. You have his dox, so you probably googled around.

It would be really bizarre if he ran scams AND a 100%-honest-intent escrow at the same time.

Even though he does not appear to be patient and intelligent enough for a smart long con I can still picture him starting the whole escrow/trust thingy with a hope that a big deal would come his way and finally deciding "fuck this shit, gotta take what I can".