I considered forking this, but how about doing the bastards one better?

You've already got a client library written--why not go ahead and post up a conforming backend as well? If you want, shoot me an email with your doc'ed API, and I'll shoot you back (gimme a week--things on fire right now) a simple Sinatra mockup.

Clean room all the things!

EDIT:

For an idea of a quick hack of this variety, see my work from last week -- https://news.ycombinator.com/item?id=6065652