I've also experience anesthesia awareness during a tonsillectomy 2 years ago. I was completely aware of the removal of my right tonsil and the injection of the marcan into my throat. No mention of that drug before surgery. I felt the pain and tried everything to move a hand or foot or make a noise and nothing happened.
I was completely awake leaving the OR and only stayed in recovery for 30 minutes. When I was taken to a room for observation before same day discharge, I told the nurses what I experienced and they never recorded a thing on my chart.
I did some research and found a site about anesthesia awareness. I spoke to the anesthesiologist and he told me what I experienced was 'recall.' I'm sorry, but I felt the pain! When I repeated some of the conversation he still called it recall. I told the surgeon at my follow up visit and he just blew it off saying he'd never heard of it and it could not have happened because I didn't move or make a noise!
I've since had 2 additional surgeries -- carpal tunnel right/left -- and have not experienced the same awareness. Thankfully I had the same anesthesiologist for both surgeries (at a different hospital) and he said you should never remember leaving the OR.
I sure hope this doesn't happen to me during band surgery. :phanvan