I just had a thought about this incident. It's hypothetical, and maybe a bit silly, but here goes:

Moments after the crash, Hamilton puts it in reverse and spins his tires trying to get out from underneath the RB and out of the gravel. I assume the engine revving brought the temps up, resulting in the team telling him to turn off the engine.

What if, instead of putting it in reverse, he had just waited calmly for a minute or two (or 5) until Max's car had been removed? Could he have gotten out of the gravel on his own without the weight of the RB on his car? Would the engine temps stayed low enough for him to wait that long? Would he have been allowed to rejoin, and perhaps un-lap himself behind the safety car?