While I don't condone the actions of the divemaster/instructor based on the post, there are some things I think need to be discussed/answered.
First, you are OW certified, that means you *should* be responsible for yourself in the water. Part of that is equipment. Were you unable to verify that your equipment was complete, and in good working order prior to leaving the shop?
Did you try on the wetsuit at the shop? If not, then make sure to do so. If so, then maybe you just need some pool time in a heavy wetsuit to get comfortable. Yes, the are snug, but should not be uncomfortable.
What were your pool sessions like? Did the instructor address buoyancy issues in a wetsuit during the classroom, pool sessions?
What speciality were you doing?
Did the instructor give a dive briefing before the dive?
DM's are not qualified to do AOW certification without an instructor, why where you working with a DM, and not the instructor?
I think this goes back farther than this one dive. I'm questioning if your OW class taught you what you needed to know. I also must question the AOW pool and classroom sessions.
The bottom line is that once you are OW certified, it is your job to make sure that your equipment is in good working order, and that you are prepared for a dive.
It certainly sounds as if you need to find another LDS and instructor, however they did get one thing right, you were not ready. It's curious why the DM would even have you log the dive. If it was not at least 20 minutes, and you did no skill, it won't count towards anything.
It's easy to blame the instructor, LDS, and even agency when things go poorly on a training dive, and in this case it sounds as if they can take the blame for several problems. Part of diving is self evaluation, taking responsibility for your diving, and your well being. I did not read one thing in the origial post indicating what things you could have done better. Certainly you can not blame the LDS for your inability to work well using gloves even if a good instructor may have made you wear them in the pool.
I'd take up the offer to dive with some of Scubaboard folks, but IMO you should not be diving with anyone who is less than Rescue certified. Also don't count on your equipment being right if you rent (or even if you own). It's really your responsibility to check rental gear when you pick it up, and make certain that everything is there, and working properly. Certainly the LDS should maintain the gear properly, but mistakes get made, so be to check before leaving the LDS.
I hope your next experience is better than the last. Cold water diving can be fun, but it's definately a lot more gear intensive, and potentially more dangerous than warm water diving on shallow reefs with good vis!
Ask around, and find a GOOD instructor, or an LDS that others think highly of. SB members tend to be critical, so if you get recommendations here, the LDS or instructor they will recommend will likely be good.