Groundloop - OK, many thanks for that.
"No-one moves aircraft around like that on an active runway. "
Well I'm sorry to disillusion you, but it goes on all day all over the world! I've certainly done something similar at Heathrow many, many times with aircraft crossing or backtracking a runway. I accept your point about the configuration and the aircraft are obviously not re-positioning. However, they certainly didn't land either!!!!