You obviously don't get what has actually happened. Oher was signed to be the RT with the thought they wouldn't need to take a tackle in the draft. When everyone else on the board was taken (Barr, Gilbert, Ebron, whoever) they tried to trade out but couldn't get it done. They took the BPA and one of the highest grades according to many. Oher is the odd man out, he can be gotten rid of next season. Who cares how much he costs against the cap. It's not like we are running sort of money.