The problem is that you're validating his shitty behaviour at the moment.
He went from being the dick that really liked this girl, introduced her to his family, really thought there was a possibility of something until he got this weird feeling about her.
And then she wouldn't. Leave. Him. Alone. Kept texting and calling even when he was sick. He broke things off with her (he'll forget the long gap in talking to you) and she kept coming back and messaging. She wanted to drive for an hour to pick up some clothes she'd left. In a blizzard. She kept messaging his mum.
You're becoming the story he'll tell down the pub, or to future girlfriends, about how he had a lucky escape, and his validation to himself that his ghosting behaviour was just him being wise and picking up on signals about how crazy you'd get.
Someone posted a link to a YouTube video early in this thread, I think, and it's funny to listen to, but deeply sad. You're becoming that sad case if you keep contacting him.
Just stop it. No more. You're actually encouraging his shitty behaviour.
Leave it. Leave the clothes. Shut him out, delete, block, eat ice cream, cry and move on and find someone better