I've decided that the best way to find Crash is to track him down via his old place of business: Ye Rose & Thistle.
A search on just the name doesn't offer much -- as Gene pointed out in the comments, it's been closed for years -- but a little creative Googling throws up the name of another clarinetist who once played there: Jack Wiard. And Jack Wiard can be found online.
Is Jack my link to Crash? We'll find out...