I agree with everyone about not feeding live. I have a BP that when I got him, was told that he ate F/T. I tried for over a month to get him to eat F/T. I contacted the breeder and he told me to try a live mouse. I REALLY didn't want to do that, but I had no choice, I had to get him to eat. I went to a local herp show and talked to everyone that had BP's, they all told me the same thing. BP's don't eat F/T, they only eat live. I did pick up a live hopper mouse, and fed him live under close supervision. He did eat it. The next time, I "stunned" the mouse before feeding, and he ate that. After a couple of times of stunning the mouse and making sure he went for it right away, I took one out of the freezer that I had accidently killed, and decided to try that one. I made sure it was nice and warm, and dangled it in front of him, and he grabbed it and ate it within minutes. Ever since then, he has been eating F/T every week with no problems. I do have to play with him and make him think it is alive by dangling it, but he takes it with no problems. He has been eating F/T now for about 1 year. I guess I have one of the only BP's that will take F/T, at least around my area.
If I were you, I would keep trying to switch over to F/T. It may take a few feedings, but your corn should switch. Try stunning the mouse first, then gradually switch over. It is much safer for your snake, and easier for you.
Good Luck!!!