liability insurance. In Germany, there are many that contractually agree to not refuse payment when the liablity occured out of gross negligence, which this would be by German standards... Yet... you were aware that this was a somewhat sarcastic remark and not me actually giving insurance advice, right?
Since this was clearly negligence, I think they would be fine. After all, they didn't intend to damage the statue. Gross negligence is still negligence.