Did you get that mess all cleaned up?
I would have cut the comb and rubber banded it in some empty frames, before lifting that second super off.
What a mess, bees will build anywhere there is open space and will do it at a rapid pace.
I bought 15 hives that did not have any racks in them and had to change them over to better wood, what a mess and they were all those little black german bees with an attitude. It was a real learning experience. Figured out how to drum bees into the new hive sitting on top of the old hive.