It is a VERY good thing that the center owner noticed problems developing and closed the center down in advance. Could you imagine what might have happened had there been a house full of league bowlers inside when the roof and wall collapsed? I'll bet that the house's insurance company is also glad that the center took the preventive measure of closing down when they noticed something wrong.
On a good note, maybe you will get a new bowling center out of the deal. I'm sure that there are likely similar problems on the top 12 lanes roof too, and I'd bet that the lane beds (on the bottom 12 lanes) took a beating from the falling debris. You might wind up with a new building and new lane beds out of the deal.