Putting fresh fondant on my hives

A couple of weeks ago it seemed that winter was releasing its grip here. Temps were reaching up into the 70's (f) and I decided to check my hives. The good bees had eaten most of the fondant under their lids, but I had one questionable queen and one queen that had obviously usurped my Beeweaver hive and needed to be killed. The Africanized hive strangely enough had eaten very little of their fondant patty. After I turned the camera off, I went and stuffed the entrance with steel wool; sealing the hive. Did it die? I'll update later.