Thanks, I'm really glad you like it! That's a bizarre bug with splitscreen issue you are describing. I haven't seen it myself, but the two player mode was a last minute addition so it's not well tested. I don't think I'll have time right now to investigate the issue, but it might also depend on if you're using a gamepad or not.
Thank you so much for your quite response-- and gotchya about the gamepad thing! We were, in-fact, using Wiimote Classic Controllers mapped to keyboards, but I think there should be an easy way to have the game recognized. Also, hey, your avatar looks like a drawing of me, cool.