I've been playing basketball for 35 years, and I was playing last night, and my competitor came up with 2 new rules that I wasn't aware of, or he's making them up from his way of learning it.
I was on defense in the key, offense was in green.
Green wing was moving towards the left post. When that happened, I was going to help and contest the other player, but my guy that I was guarding, with his back to the hoop, was moving down the block, so that I could not get past him. To me, that seemed like a moving screen, but he said he was just moving normally around the court.