Yep.
For years and years, Owen Finnegan (a blindside flanker) got away with binding onto Bill Young (the loosehead prop) in the scrum, both when playing for the Brumbies and the Wallabies. He did this into order to help Young "bore-in" on his opposing tight-head prop. Even when Finnegan packed on the tight-head side (when the blindside was on the right) he would bind up on the prop to help him bore in on the hooker. He was really crafty about it too, often starting by binding legally, and then slipping up into the illegal position as soon as the referee moved away from the scrum. I have also noticed Rocky Elsom using the same technique occasionally.
Well, it is cheating, and it is dangerous, and Bill Young is now paying the price for what he and Finnegan did.
And, those who say it is only the All Blacks who "get away" with stuff, perhaps you can explain why Michael Brial was not red carded for this act of thuggery...