I look at it this way. They brought in an OC who runs a simpler blocking scheme than the previous one. Perhaps a scheme that fits their players better. This is equivalent to drafting a 1st round O line prospect in my eyes. Then they strengthened the rest of the team as they saw fit. We needed a pass rush and they supposedly got a freak.
I think hedged their bets that the poor pass protection was mostly due to Schotty's crazy scheme rather than their players.