Followup, over the course of that game, we had a couple people disconnect. I talked to one of them afterward, and he said he had Alloy on. Also, when we got the "Disconnected from Ironclad" message, we immediately lost another. Based on my experience with having Alloy on, I suspect he did as well. Otherwise, the game was very long and successful for the people who remained. Well..until I killed them.
Just giving feedback, could be coincidences.
Update: I talked to another of the people who disconnected, and he had Alloy on as well. I know several of the people who were with me for the duration had turned Alloy off, but I can't be sure of all of them.