Are you sure it's too much insulin? Protein and fat are a good "gee my blood sugar seems a bit high" measure. If you need to reduce the insulin, you may need something more on the carb end. The symptoms you're describing could be serious.
Sorry for posting as an answer to my own question but it wouldn't let me post through scottts comment box.
from another paleo site:
"Glucagon is a hormone used to raise blood glucose by releasing liver glycogen and triglycerides stored in fat cells. Glucagon is also used along with cortisol for gluconeogenesis. Glucagon is the counter hormone to insulin; both regulate blood glucose and are needed in the same quantities to maintain weight. Glucagon is released in response to low blood glucose, free amino acids and cholecystokinin. It is blocked by insulin and free fatty acids."
So would glucagon released in response to high blood glucose (insulin spike)? If yes, would the insulin then block it? Something doesn't sound right there...