Hi,
I feel your pain, and I certainly hope Eric can give you some good news, but...
You sound like you are blaming PM for your own error. This is not fair at all. I have made mistakes like this before, but the bottom line is, when we do things like this, we only have ourselves to blame.
I hope you can retrieve your settings to minimize the pain, but as long as you learn something from a mistake, it is never in vain.
Charles