The driver’s hole of the Abrams has one way out (well, technically its possible to drag him up into the turret, but it would have to be aligned at a precise angle and it would take some work to remove turret guards, etc...it won’t happen. If the tank in inverted or submerged, getting the driver out is problematic.
As far as decapitation during turret traverse...it does happen (we had a kid in our unit get his CVC tangled in a camo net on the turret bustle with his drivers hatch open which resulted in his death).
I love the Abrams, and it is the finest tank the world has ever seen, but it is a cruelly efficient killer and will bite you if you aren’t paying attention.
Regards,
I was amazed at Ft Irwin CA to see them lift the power pack out of an Abrams onto the ground & then fire it up.
Meanwhile we were working on AVLBs with the same M48 hull that I remembered from the 1970’s as the M48A5. This was in 2000.