The main point I like to make is that to generate an earthquake that released as much energy as a Tsar Bomb, you dont have to input energy equivalent to this.

Think about a very tall jenga tower. You do a minor flick with your finger at the bottom, and the whole tower collapses releasing orders of magnitude more energy than you put in.

This really resonates with me! [Ha! That was an awesomely awful pun there.]

I agree wholeheartedly with this possibility. Is Turkey located in a seismically active zone? Were there already forces building along the tectonic plates in that region? If so, just one little low-energy nudge (a la the tumbling tower block analogy) could have resulted in a significantly higher energy output.

All in all, the whole chain of event feels a bit too coincidental to me. And I know we tend to give coincidences a well-earned stink eye here. At the very least, I think this timeline of events needs further investigation.