MU3001A
The Purser seems to have come up with a compromise on her own initiative, that didn't require interrupting cabin service. But she should probably have called the captain to let him know she had pushed the decs under the door, which would have been easy enough to do. Still, nothing that a reasonably well adjusted person needs to get all worked up about, still less something that rises to the level of diverting the aircraft merely to offload the perceived insubordinate crew member.
Agree 100%. In fact, in an earlier draft of my comment, I stated that I hoped she had, in fact, told the flight crew of the "under the door" disposition.
Still, even if she had done it silently "to just show him" I still don't see how he could use that as justification to his UA "generals" for the diversion.
I hope, for the captain's sake, that there is some big smoking gun hiding in the ether.