In any case, I'm sure we would all love to hear from Doc Rick, welcome him back, and interact with him on a regular basis.
So, please ask your dad to sign-up again. We have all missed him and would love to have him back. There is nothing for him to be embarassed about, more so since you have apologized to the forum, as he deemed was needed.
But... how can we tell that this is not just another sick joke this time around? hmmm...