Too funny. I had a similar incident happen a while back with a house I was doing except it was my own fault. I dropped a heavy plate right through the roof taking out the main support. I tried gluing it, but didn't have any confidence that it would hold weight at all so I had to scrap that house for parts. If you do glue be sure to clamp, clamp, clamp. Also since it's MDF instead of wood it gets a torn look when it breaks. This can make gluing it tricky since the fibers get in the way and make the piece longer than it was.