I would be fairly concerned. While It is true that getting the meat up over 165 will kill any living bacteria that may have developed, but that is not the entire issue. Part of what causes food poisoning is what the bacteria leaves behind while it is active. That does not go away once the temp comes up. If it did, then no one would ever get food poisoning from fully cooked meat, and that is not the case. That is why there are time related guidelines for the danger zone. If it is in the zone for only a little while(under 2 hours...ish) any nasty bacteria will not typically have had time to do enough damage to be a huge issue. Once you kill off the live stuff, you are ok. If is longer than that though, it becomes a major concern because there may be too much residual damage.
I hate to tell you to throw it all out and start over, but I think you have to ask yourself an important question. Which way do you want to be wrong? If you start over, you are out money and time. If you roll the dice and there is a problem, you make a bunch of people sick...maybe even really sick.
I don't envy your position. Good Luck!