I had not heard a thing about this.
I find it highly unlikely former SEALs still active in private security would be hard drug abusers...drink booze and get in bar fights, sure...but hard drugs? Never heard of it. It seems easy enough to verify too, habitual heroin users should have track marks as well as having behaviors consistent with users being noticed by co-workers, family and friends.
And both, dead, of the same thing at the same time?
Certainly looks like a hit of some kind to me, would have to be some bad operators to get the drop on these guys though.
And I don't know about this GRU and MSS crap with MH370...it seems to strain ones imagination to think there is a nefarious link here, and any conspiracy involving the US and Diego Garcia would have to hide a lot of eyes on a busy strategic US installation...I mean how does Joe Blow not see a big red-tailed 777 land at their airport, see reports 24/7 on CNN about the missing 777 and not think "Huh, I think I saw that plane?" and word not get out?
It unravells for me at the end when it spins off into 9/11 conspiracy BS...
So, GRU, MSS, 9/11 and credibility nix it for me on that latter score.
It may be more likely that these SEALs were snuffed as a result of stepping on someones toes from previous Ops they've done with Trident.