I've seen that clip around elsewhere, but is was lacking in detail as to what the long term damage was. For example, would resetting the camera or the "sensor clean" trick help restore the function? Or was that part of the sensor fried for good?
The "sensor clean" trick on Canon is used to clear hot pixels that might show up in normal shooting (not long exposure). Apparently when you go into sensor clean mode, the camera cuts all charge to the sensor and that effectively resets it. I have successfully used this on the 50D a couple times but fortunately the transient hot pixels are rare appearing.
_________________Canon DSLRs: 7D2, 7D1, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 10-18, 15-85
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 50/1.4A, 150 macro, 120-300 f/2.8 OS
Compacts: Sony HX9V, Fuji X100.