Lemurian -
"And btw, the co-pilot was only arming the ground spoilers, not extending them."
Ah...you yourself stated in #25:
"the crew thought wise to deploy the [b]ground spoilers/b] on landing...."
The F/O did not "arm" them; he EXTENDED them.
Are you being a bit dishonest?
Without reading the reports on the other two, I won't comment. I do recall something about the PTC being deferred. But so what? Stuff happens.