Yah, with you on that. More often than not, the answer is probably mental illness. I don’t want to run afoul of forum rules here, but we’re all broken in so many ways, and I think episodes like this are probably more common than we want to admit. I myself have done some pretty unhinged things in times of distress.
200 meters is not much for a commercial jet. That’s the very final moments of landing. As I said, it was scary, but it was over in moments as the plane touched down. A very very different thing than the plane sprouting a 3x6’ hole* at 30,000 feet.
I won’t say “the door opening here”, since it’s established that this would be impossible unless the plane was very close to ground level already