BM is a wicked man, I agree. I also tend to believe that if his efforts to suppress evidence fail, he may do a Brian Walshe as you suggest - the last refuge of the scoundrel. It didn't work for BW and it won't work for BM. MOO.I fear the Defense will flip the script and say BM wasn't the only one in the State, in the county, in the home who had access to his BAM. He'll plead guilty to tampering, abuse of a corpse, etc, but claim he didn't kill anyone, that the victim died herself. Shameless defense if they do it. BM was the suicide-threatener. Suzanne wanted to not to exit her life but to re-start it.
But yes, I think he'd sink this low.
JMO