So after a shtterd window, getting stuck in the ditch, hiting a bird and having blood stain on the bumper, and being hit in a prking lot i come home Today and fine my headliner coming down....i knew it has been coming down...but it was only in the right rear corner and around the overhead consol....but now its totaly come down over the front passenger seat....well still hanging but its a huge bubble....this has to be like hell month or hell weeks for BC

are there any conditions that would suddunly make the headline letgo?, like temp or humidity....though the car was in the garage for the last 4 days and wasn't touched...

Any little thing like temp or humidity like you mentioned could be proverbial last straw. The only sure thing with headliners is that once it starts to come down, it aint going to stop.