Fixing Foam Archway

Several years ago a friend of my mom, and fellow haunter, offered me several boxes of his Halloween decorations and props as he was moving and didn't have the space for all of it. One of the things included was a skull archway which to this day remains as probably one of my favorite props that I have ever owned. Unfortunately, it doesn't fit my front door quite well due to the gutter being in the way. Two years ago I had it mounted and the top piece ripped off and broke. I want to be able to re attach it but I'm just not sure what the best way is to get it back together again. The arch is made up of a dense foam and was once rigged to have flickering candles on top, but the electrical parts have been taken out and filled with Great Stuff. Any ideas how to fix the rips in it? Don't want to have to lose it!