LIES!

I ran platforms on my winter fixie, granted I wouldn't advise riding fixed on platforms, it can be done. Skidding can also be done, but it's a hell of a lot more work than it is with a foot retention system.

Basically, you *have* to commit to the move, you can't half-ass it, you'll get bucked/thrown - just giv'er with your back leg and push your balls/vag right upto the stem and haul against your bars to get the leverage. My tyre wasn't a 35, mind you (an old tired 28 in fact). I sheered splined cranks on one of my winter bikes because of resisting/skidding - it takes a lot, but it is very much possible.

I've heard of folks down in the caribbean doing two-footed platform skids, they hook their foot under the lead pedal and push hard on the back leg/pedal, I've never done this personally though.