With Anthony Davis's injury, is it possible to rescind the trade at this stage?

More of a general inquiry/thought question given the recent Mark Williams trade being rescinded - with the news that AD's injuries were worse than feared either before his trade or due to the Mavs playing him 30 minutes in his first game, is it possible at this point to rescind the trade if one of the teams chose to do so, especially given that each player has played one game for their new team? Is there any past precedent?

Now, I don't expect the Mavs to do this due to Mavs ownership and leadership's most recent baffling comments disparaging Luka, and I personally would reverse it in a heartbeat, but I do wonder what the ramifications would be for both teams if the trade were to be reversed at this point. Given the shockwaves the trade made across the league, how insane would it be to rescind the trade?