It is possible probable that I forgot to tighten them, same as the fender bolts. I was probably in the process of switching from a hex socket to an allen socket on my torque wrench when I was suddenly distracted by one of the usual daily occurences around here like lightening striking the house and causing a water main leak, or the washing machine backing up into the guest toilet, or a Panther wacking a gash in the dogs nose. Although I am merely a motorcyclist, everyone else around here, for reasons unexplained, considers me HOH and expects me to attend to these issues and promptly.
However, my theory is that some crackhead found out how expensive these bolts are and stole them to sell for drug money.