well, i've heard this term "ripping" mentioned a few times. i have no idea what that means, or how it can be clearly defined in a way that you could interpret i for a rule, but it seems to me that in the video that i saw of that choke hold the ol did not have his feet in from of parsons. rather, he was off to one side of parsons, and restrained him from turning the corner towards the qb. and if all you have to do to not get called for holding is to keep your feet in front of the defender, then i guess all of our ol need to start doing the bear-hug thing immediately. i thought if you have your arms wrapped around the defender, that was clear holding. i guess i never heard the feet in front terminology before.