I've had the problem too - its not a headphone issue. I tried 5 different kind of headphones. One with a right angle jack was best, because it jangled least I guess, but still crackled, shocked my ear, and would play/pause/skip music on the player while it sat in my pocket.
To my surprise, both Verizon and Motorola acknowledge that this is a dx problem, so they replaced my dx. I'm using the 'better' headphones, so I rarely see the problem now, but its still there - its one of those things that gets worse as it happens, so minimizing it on the replacement seems to be helping.
I've always used stereo BT headphones, but they're so quiet on the dx (plantronics voyager 855, jay birds, jabra clip and samsung lanyard) I had to go back to corded. Bought the moto ones, but they were so uncomfortable and seemed just as quiet, so I returned them.
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