Other than a Toyota's experience with slipping car mats and stacked winter mats, there are no documented cases of "unintended acceleration". It is always later proven to be driver error. Audi was nearly ruined by false reports by CBS which for which Audi was completely exonerated. Prius reports were shown to be false after investigation. People hit the wrong pedal and panic! People truly believe the car was at fault even in the face of conclusive evidence to the contrary. If you want to kill the resale value of your Cmax, keep this thread going!
Perhaps you can appreicate that there is a huge difference between hitting the wrong pedal, and hitting no pedal.
"...I took my foot off the accelerator (emphasis added), but the C-Max kept accelerating. I applied the brakes - car still kept accelerating."
Audi's problem was a pedal arrangement that differed from other luxury cars of the day. People really were pressing the wrong pedal by mistake, because it was in about the same place as the brake pedal in their old caddy or town car. FWD was new at the time, and required different pedal and firewall layout for packaging reasons. But who in their right mind is going to tell a grieving mother that she just killed her child!
Here, LW was not making any input, and then applies the brakes which fail. Are you saying LW is mistaken in recalling that he lifted his foot, and was really flooring it the whole time? I've had the car apply the brakes when my feet were not touching the pedals, and I am absolutely certain of that fact, because I was moving my foot from the brakes to the gas, and the brakes were applied when I was mid-transfer.
This car is very sophisticated, very complex, and with a large number of new and (for the great unwashed public) untested safety features that may or may not reduce driver risk. Everything described here is plausible, while in the Audi, it was physically impossible without pedal error. Granted, it's possible to accelerate without using pedals (cruise) but that would be malfunctioning if it didn't drop out when you hit the brakes.
And remember, brakes always win. Self-acceleration accompanied by brake failure is a potent problem. I say investigate and fix, rather than hide the danger so your car's worth more.