Wash all the others first. Remove the ones you have in there and replace them with washed ones. Use some carbon for a few days to help take out whatever it is that the bag has left in your aquarium. If you already are running carbon, replace it with some new carbon.
I would also try and readjust your skimmer if possible so that it can help pull out whatever is left in the tank.
My skimmer only went nuts for a few minutes then it was fine. Never did it again after I added new, washed bags.
Possibly the bags you got have a different substance or more of whatever it is that causes the mass overskimming.
As long as your creatures are doing ok, i wouldnt worry too much about it. Some carbon should help. Maybe do a good water change too.