Unless SegWit actually gets activated and functional 100%, we will see more tricks from them, they definitely plan to do something, I also cannot consider BU as dead unless they have 0% hashpower. The weird thing that I still can't understand is why people are supporting it If their software is full of bugs and almost everyone is against them.
People really liked their Idea of having unlimited blocks but they never thought that they were not competent enough to carry the bitcoin flag and the rest of the hash power you see are either paid to do so by the team or the team behind bitmain is providing those fake strength. 
Yes it is filled with bugs and so is the reason that most of the sane people have lost faith in BU and their journey to over power and over take is over in my opinion.