Off the top of my head, the only thing I might suggest is cold (rather than heat), which may cause the plastic to contract and pull away from whatever it's fixed to. But I'm not sure how you'd apply that.

In The Back Of Beyond: My photography blog. Everything seen through the camera of my iPhone.
Last Edited By: Fin Fang Foom May 11 10 9:23 PM. Edited 1 times.