I can so relate to how you feel emotionally over what happened. I'm sure you know that no one in that crowd would want you to feel embarrassed....as hard as it is try and put yourself in their shoes and you will know that they all love you and care about you. I know thats how you would feel if it happened to one of them! With that being said....I do not have the extensive issues you do with your spine but have nerve damage in both legs worse on the left, I can be walking along and next thing I know I'm on the ground. I joke and say I'm a professional faller as I have fallen in front of so many people at special functions or even here at home. No matter where or when it is so embarrassing, so I hope knowing that many of us here can relate and are sending you lots of love and understanding....but don't be to hard on yourself okay?