Father-In-Law Phenomenon from Beyond the Grave. Very strange, pic included.

My father-in-law passed away about five years ago. He was married in his life, then divorced, but had a relationship with a young gal before he got married. He referred to her many times in fond ways to my wife, on how much he loved her, and how badly he missed her.
Our daughter made a collage of family photos, included was this young girl that the father-in-law (FIL) loved so much. We hung it in our bedroom and looked at it often.
After my FIL passed away, we noticed a change in the picture within days of his passing - the picture started bending. In the weeks and several months to follow, the bending became so pronounced that it actually began tearing the backing off with it. This is how it looks today:



Nobody touched it. So many things we do not know once we leave this world. Just thought I'd share.