Are you saying you are tearing up fletchings because they are over penetrating, or that they are "sticking" and you cannot remove them?

If they are burying too deep... then sell your bowtech and get a slower bow like a Mathews.

If they are actually sticking, then your bow is probably shooting so fast that its melting a thin layer of the styrophoam and somewhat fusing into the target. Its friction... it happens. Woodys arrow lube or even a bar of Ivory Soap will work. Just put some on your arrow shaft on about the front 30% of the arrow. Should last 10 shots or so.

The target just isn't super high quality anyway. The ones from Cabelas, Dis-nicks ("Richard's"), Bass Pro etc etc... they are all the same. They just won't hardly stop modern equipment at much above 55#s.