They never actually
say what a "Plasma Discharge" is, or how powerful it is. All they have is some pictures of lightning and the aurora. Neither of which are spectacularly dangerous. If it were deadly (or the asteriod had any decent chance of being negatively charged to any decent extent) don't you think there would be evidence? Hundreds of thousands of NEA's have entered the Earth's magnetosphere over the Earth's history. Hundreds of thousands of instances of "massive eruptions of fire across hundreds or thousands of square kilometers" would be pretty damn noticible, even across geological timescales, don't you think? And all this is ignoring the fact that the chance a mere few-hundred-thousand ton asteriod ever picking up enough charge to challenge the magnetic field of 6 sextillion ton Earth is laughable.
And then they have the temerity to compare this asteriod with Tunguska. The difference between the two being that Tunguska actually collided with the Earth... this one will not. The Tunguska impactor destroyed an area the size of London by converting kinetic energy to heat. TU24 will do nothing of the sort. How can you compare the damage outputs of two different sized objects in two completely different sets of circumstances? That alone should have disqualified this video from serious consideration.
P.S. I'm also irritated at their use of the word "massive". Massive traditionally refers to an object's mass, not it's size. Comet Holmes was
not 40% more massive than the sun.
... And just as I finish typing that there's a blackout. Wierd, no?

We own all your helmets, we own all your shoes, we own all your generals. Touch us and you loooose...
The Rogue State!