I wonder how long you have been a type 1 diabetic -- could you still be honeymooning, occasionally producing some insulin
of your own? What preceded this event -- did you participate in anything stressful (go
od or bad stress can cause me to drop low)? Also, how old was your insulin
-- if you use a long-lasting insulin
like Lantus, if it is older than 1 month old, it can misbehave.