Part of the contract he signed reads:
“The buying party also agrees that at any time during the stipulated 88 year period, the seller may legally plan and attempt to execute one (1) heist or caper to steal back Once Upon A Time In Shaolin, which, if successful, would return all ownership rights to the seller. Said heist or caper can only be undertaken by currently active members of the Wu-Tang Clan and/or actor Bill Murray, with no legal repercussions.”
This whole thing is Art.