We had an almost identical scenario last year on the Staffs & Worcs.
I was working the lock and my wife was driving the boat (I do let her sometimes.....lol).
The lady?? concermed accused me of stealing the lock and went into a tirade of inconsiderate boaters.
As I passed her boat which was being held in by her hubby and the centre rope, I asked if his wife was at that time of month?.....lol
My wife brought our boat past his and she wished him a very cheery "Good afternoon" and as we looked round we saw his wife closing the lock gate even before their boat had gone into it. Her hubby was shouting, shaking his head and generally being VERY frustrated.....lol.
This has kept us amused during the winter.
Unfortunately, we never noted the name of their boat in case we ever met them again.