PerroneFord:Yea,
Without taking sides, it's clear something here was "broken", and honestly, I think the instructor's role is to break the cycle and fix things, or let the student be on their way. I've had to do this in my professional life, and sometimes you just take the good with the bad. It is probably not possible for the instructor to do due diligence on the student (unless it's a special case) so that burden really must fall to the student.
I spent hours grilling the person I chose to be my technical instructor, and would encourage anyone else to do the same.
I agree something was broken. From the marks and tracks I've seen in the cave, I think sopmething is broken in a lot of classes.
I've had difficult students. Some that were borderline confrontational, some thought they already knew everything and some who were sensitive and didn't appreciate my bluntness in briefing/debriefing. The instructor has a professional responsibility to break the cycle and keep things safe but as a diver, the student is also responsible. I think this is especially true at higher levels of training where the student should already know a great deal about what's going on.
I don't know whos fault this was but it seems clear that niether party can claim success. This student is an instructor and a tech diver? He doesn't know how to pick an instructor or when to back out? He doesn't know that he's going to have to be neutral, trimmed, non-silting and have to reach his valves? He's going to whine because of the way the instructor debriefed him? The cave instructor, by his own admission kept taking the student into the cave flutter kicking and bouncing off the floor and ceiling? I don't care whos word you take, it doesn't pain a pretty picture for either of them.