DH had way too many beers yesterday and was talking up a storm.  I kind of had things figured out about what transpired.

BM became unblocked because she was with SD's and sending him texts and he wasn't responding.  SD's called him at work and asked if BM was blocked because "they" were trying to send him something.  Because SD's were involved he unblocked her with SD walking him through how to do it, although I know that he knows how to do this.