I have complete belief in that.
Even though they had Irwin rated as the top pick, had RT been there they would have taken him. Wilson is proof of that alone. Had they done so, RW would not have been taken obviously and the pass rush would have been dealt with in the 2nd and LB in the 3rd.
Trading down to 15 was the response to Miami's selection and Irwin was plan b.
Just my opinion.