Here’s my theory, based on my information that the aircraft is the long range variant 777 with extended range of ~7200 miles.
The plane was hijacked,
The passengers are dead,
It is being re-fueled to use as a flying bomb.
Greg Feith said on Today this morning there is no chance this plane traveled somewhere and landed safely.
In the OP there is mention of an unusual seismic event. I wonder if the “bomb” had already been loaded along with a bunch of fuel and there was a premature detonation on crash or attempted landing.
The plane ended up on the island with all of the Beatles, including the original Paul who was replaced by the one we see now. He survived the 1960s car crash. Also on the island are JFK, Marylin, Jim Morrison, Andy Kaufman, Jimi, Lady Di, and the guy who played Pepino on the early TV series “The Real McCoys” just to name a few. That last one was an admin error.
Still don’t see how it could not be an accident.
My guess...It was hijacked by Chinese muslim separatists from Xinjiang. The plane was intended to be flown to and landed there. Did it get there?
The Chinese air force may have shot it down - saved themselves the need to negotiate. Something the Chinese might not want to admit to.
Consequently, they offered bogus satellite shots to keep the search focused near Malaysia - and away from China.