The issue right into last night was a lack of available stands not helped by the extreme time it was taking to de-ice easyjet aircraft once they started to operate again. The initial wait was over 6 hours for a stand but even late into the evening it was still around 2 hours.
Many aircraft were diverted away from Luton due to a lack of places to hold the aircraft once they had landed.
Apparently the terminal was hell on Earth.