Well, I'm still not sure what is going to happen since I'm afraid to talk to him about it until he gets back. But, I am pretty sure he will decide to put the big dog down, or might even be required to. I might be stupid but I don't think the white one (the sharpei/terrier mix) would really be able to seriously injure someone (but wouldn't allow her around the children anymore), she is much smaller and not a "real pit" ? where as the larger dog is much more dangerous and ability to kill someone, even if he is a "cuddly buddy"...
Even though they both bit someone, I am much more comfortable with the white one and think she could be handled differently to prevent problems vs putting them both down, I don't really know. that will be his decision as they're not my dogs. But if he wants to keep them both I will have some serious things to figure out.