The part that is very strange to me, if I read it right, was that the oil level on the dipstick went from nothing registered to 3/4 full while the bike was sitting in the parking lot of the donut shop. Theoretically that can't happen with a dry sump engine, since no oil transfers from the sump to the oil pan unless the engine is running. Or did I just read it wrong and the oil level increased after letting the engine idle for a period of time? Either way, assuming you have the latest oil pump cover and seal, your experience is not the first time I've read something about a bike with the latest parts sumping; I've seen a couple other reports similar to yours. In one report the rider recognized the symptoms and pulled over, allowed the bike to cool for a period of time, fired it up and rode it home without a repeat. He was advised to have the engine checked for damage but I never saw a further report from him.
Jerry