This wouldn't happen to be the imp stout from northern brewer, would it? That's a very...energetic kit. I've had the same problem with it, had to put the blow off reservoir in a pan to catch the drippings.
As long as you've got movement, I think you'll be fine. The only thing I'd be worried about is infection, but I don't think that's a huge concern. Especially if you occasionally clean that up and sanitize the area.
Folks wiser than I might want to chime in, but I think you'll be fine.