If I found someone blatantly repurposing something I worked hard to create, I'd have a similar reaction. This guys aren't CXOs of a Fortune 100 company that need to fear how the board and stock holders may react (and god fucking bless 'em for that). They're scrappy guys still hustling like they launched yesterday.
Calling them "fucking scumbags" isn't a cocky response, it's a free reality check. Poor Allan had a pretty significant lapse of judgment, and DHH may have given him the most valuable lesson of his life.