Well, first of all I feel for you man. It sucks when something like that happens and poses threat to serious repercussions. I'm glad you are safe.
In reading your post in which you state the environmental details being
"it's a tight turn and with water running across the banking of the road, it totally caught [you] off guard", you then later state that you've
"been driving this car 12 years now and put 110,000 miles on it so [you're] sure it must be [your] inexperience," albeit sarcastically - or that's how I took it anyway.
My questions to you are - (1) Were you previously aware of this intersection's potential hazard prior to engaging it? (2) Were there any posted highway signs cautioning drivers of this turn? (3) What was the posted speed limit? - The detailed information you provided seems like enough for any car to lose traction, whether FWD or RWD,
dependent upon speed.
You state you've wiped out "
3 (almost 6)" 
times so it leads to speculation that IF not familiar with the area in which you were driving, a reduction in speed and vigilant awareness of any upcoming obstacles/hazards would surely have yielded a better result. Again, given your explanation of the road conditions and the surrounding environment, it sounds to me like ANY car exceeding the surface threshold of gravitational momentum vs. fluid dynamics would have fared the same.
Simply put, I wouldn't blame the car,
solely. This reads (to me) more like a combination of driver error and the forces of nature. That being said and coming from an avid 240SX performance enthusiast not to mention fellow neighbor in Florida - tell your wife you're keeping the car.

Again, glad you're ok.