My met professor at Mason swore there was a coverup and that the meteorologists had told them not to launch because of how cold it was but NASA officials went ahead and launched anyway. He would state conspiracy theories (I haven't really looked into them or if they are even true or false) about the launch. I do remember him claiming that he had a friend who worked down there and was involved in the launch disco on that day was told to sign something saying he couldn't discuss what really happened because NASA didn't want that info to leak out.
Now before we get carried away, he was actually a good professor, he taught the class well and I learned a lot in his class. Just that subject drew his ire and the such. It was a bit weird, was never really sure what to believe