That really sucks, man, sorry. I've only seen one vehicle actually shifted into reverse while in motion. My brother shifted our 66 Cuda at about 40 mph- it chirped to a stop, then started backwards. I had to have my trans rebuilt in my station wagon because of the great plastic linkage piece under the airbox which gets brittle, then breaks and you lose 2nd and 3rd if you drive it more than 10 feet like that. A local guy did the rebuild for $500.
"Just because I don't care, doesn't mean I don't understand." -Homer Simpson