I need some opinions on what this might be from those who are much more experienced than this newbie. Today I was on the highway, 65mph-6th gear on my 2010 FLSTC. A hellacious BANG came from somewhere below my butt, the bike shut off, and I drifted to the berm. Just because I figured I had nothing to lose, I tried to start it-nothing, I have power, but the bike won't turn over. I tried going through the gears, and-there are no gears. I worked the shift lever through all the gears from 1-6, and I can push the bike when it's been put in gear. In other words, no matter what gear its in, the bike can roll, like its in neutral. I have a baaad feeling that this is going to be monumentally expensive. Does anyone know what this might be, even an educated guess? Thanks in advance.