As far as I k now this stuff is pretty much impervious to everything accept maybe a prolonged soaking in castor oil (don't ask). On bare balsa I would think it would peal off fairly well. I'm assuming is a bead of glue holding a canopy of window in place. If you've laminated balsa with it, I think you're pretty much stuck with what you have. (no pun intended!)

Looking forward to other replies.