Thanks for the inputs, the temperature here in AZ. is cool and among my other concerns, was the time that the ribs would be in the danger zone. I normally cook ribs at 150° for the first hour then raise to 225° for two hours, with that sequence, I was not sure whether or not the frozen ribs would be between 40° and 130° for more than two hours. I assume from the comments that the other factors, smoke flavor, bark, texture, etc., would not be adversely affected by the frozen status.