it did fall off from being fitted badly, i must have missed out in my previous post that on return to the thing i thort i hit, i drove over it again, i left my gf by the side of the road to check it out, and there was no way i hit it, i think the bump of going over such a large object was just enough to knock the front bumper free, so when i checked the rest of the fittings, it turned out he hadnt fitted it properly at all
