No, the only way any of them could have possibly survived is if the Brotherhood had a teleporter. They could have tossed the bodies into a van and driven off just as easily.

So, let's take an optimistic view for a moment. Brotherhood ever had any teleporters that we know of? Marie-Ange, new job for you. I want everything that the X-Men have ever learned about the Brotherhood. Talk to Pietro, put together a full profile of all of the known associates that we can find. That might be the key to finding them.