What's the other end of the conversation look like and what events are leading up to this? If he's been taking cheap shots all day it's likely raised his emotion level. I don't think condemning an action without context is prudent. I don't think we need crotch grabs in celebration or even in sport, but.... what set off this tirade and what was fueling this prolonged display?
And no skin color isn't an issue for me, boorish behavior is boorish behavior, but emotions are difficult to stifle sometimes, especially for a kid in the heat of a heisman chase.