[pkteison]

I have an employment agreement which their lawyers believe says otherwise and I like my job.

[icedchai]

That's fair, but I'd simply ignore it. You will likely not be discovered working on a hobby project. If you are, nobody will even care enough to follow up. If they do follow up, you will likely get a "talking to" and still keep your job: a slap on the wrist. However, because you bothered to talk to their lawyers, you've now brought attention to yourself...