Thanks for all of the replies. No doubt that responsibility for the entire situation rests on me before anyone else. That's the reason I took the time to reflect, writing it down in this post forced me to really thing through the details.
The incident pit graphic is great, having a visual of that will be helpful during future dives. In the end, it may be as simple as "if things aren't going the right direction and don't feel right, end the dive". TS&M summed that up pretty well.
The other thing I took away from this is never take any dive lightly, even a demo or pool dive. I already knew that, but I think that I let my guard down.
The incident pit graphic is great, having a visual of that will be helpful during future dives. In the end, it may be as simple as "if things aren't going the right direction and don't feel right, end the dive". TS&M summed that up pretty well.
The other thing I took away from this is never take any dive lightly, even a demo or pool dive. I already knew that, but I think that I let my guard down.