FE Hoppy
I've re-read your posts. How big a circle are you talking about? Enough to 'lose' a bit of time until MH370 could get close enough to another airliner, for example SIA68, to 'shadow'? To use this unsuspecting 'host' to mask MH370's transit through SSR, Primary & Procedural airspace?
It's feasible but isn't it all a bit too 'James Bond'?