Were all these high risk things happening at once? Was he in low vis 20m from an exit while squeezing through doorways at 45 degrees banging his tank while an inch off the bottom?
Or did he do these things separately?
You see, I can imagine wrecks in Malta he might describe like that but which are not at all scary. I also know that Malta has the most regulated diving in Europe and that losing a student would be extremely bad for the instructor if they were being as reckless as this thread makes out. Diving is taken pretty seriously in Malta.
Quite frankly, I don't care if they were all happening simultaneously. An OW diver, on their deep/nitrox training dive, with no wreck penetration training or experience, has no business being in the situation in the first place. He has no business being inside a wreck with conditions so tight that he is repeatedly "banging his tank" and "bumped and cut my head several times" or "cutting his hand" and getting to realize that blood doesn't have the same color at that depth from the cloud,. He has no business being in a wreck with silt-ups. He has no business being in a wreck 29+m down and 20m away from an exit. He has no business being in a wreck with visibility so poor that he can't see his dive buddy.
I really don't care if the dive was done in Malta or a quarry in the mid-west or in Mexico, he had no business being on the dive and it was irresponsible, reckless, and dangerous for his instructor to take him on such a dive.