Well, chalk up another new experience. Today--just outside my driveway, there is a little bit of a bank in the road to the right and a slight uphill as the road turns left. I guess that's the magic combination, because at about 25mph my left front wheel came off the ground and the VSS never kicked in. I didn't even know it was off the ground until I felt it hit back on the road. Guess I should have leaned...but I've done that exact thing probably 50 times so far and never had that happen. Very interesting. So acceleration + road sloping right + road turning left + going up hill = 2-wheeled Spyder I suppose. The funny thing was that it wasn't scary...just more of a "dang, did that just happen??"