I don' think they should have moved Colins to RT in the first place since he's been a guard for years. Trying to move a guard outside and make him a tackle after he had already shown well at guard in 2016 before injury, while simultaneously taking your swing tackle (Green) and make him a guard after he had shown himself capable at tackle in 2016 is probably one of the more bone-headed decisions this coaching staff has made, and that is saying a lot.

That said, I think it is a mistake to try and move Collins back to guard. He was coming in to his own in 2017 at RT; let him finish. The constant shuffle can be worse than getting someone acclimated. Look at Byron Jones. Find a spot and put them there. The Cowboys seem so intent on flexibility that they are sacrificing quality, and they are under-performing.