None of this makes any sense. Four laps with snorkel is not the swim test (assuming a normal 25 yd pool). A mixture of wetsuits and one dry suit? Too weird. Who was learning the dry suit? A "few" tanks and fins, but not enough? Who rented the stuff? Didin't you ask to rent a set of gear, that would, theoretically cause a reasonalbe shop to rent you what you need. I assume you read the manual before the pool sessions. That should have given you a clear understanidng of what gear you needed and an understanding of hypothermia.
A real instructor expects you to swim 200 yards and do a 10 minute tread in 53' water for OW certification, despite your lack of experience (not that experience actually matters, that is just stupid). Sure, you can wear a computer in an OW course, but all of you had computers, to swim in a pool? Even though you did not have adequate basic gear? This is just too bizarre.
You are then doing mask clearing and other skills without having done swim and tread, or more accurately, having failed at it? I guess in a wetsuit? I thought they didn't fit? Or were you doing the mask clearing, reg exchange and other skills while still too cold to even swim in the pool? And then you are supposed to take off the wetsuit and do the swim, after the other skills? You haven't ever snorkeled and have not been been swimming at all in 5-6 years but you are going to jump in a very cold pool and swim 200 yards, or snorkel 300? Assuming you are not just making this stuff up as a joke, this is absurdity and I would dump the whole thing. Are you sure this guy was an instructor? Go find an real instructor and legit operation, or scrap the plan.
Or, if it is a joke. It isn't a very good one.