I have just read elsewhere on the web a post from Dr. Magerovsky who indicates that a "canonical ROCOR" will be continued with Bps Daniel and Agafangel heading a new temporary higher authority based on the ukaz which allowed ROCOR to be formed in the first place.
Earlier, Dr Magerovsky noted that 50 of the 70 clergymen at the Eastern Diocese meeting proposed a statement against the "union" with the MP, but were not allowed to read it or vote on it, so it looks like ROCOR will continue, and ROCOR-L can be part of the MP.
If the flock wished to be part of the MP, they could have found MP or OCA churches all on their own without help from Metropolitan Laurus. While many will follow him into schism, one has to ask why given that if they believed in the MP and the OCA, they could have left long ago.