If it is true that Furman had a blind student play Maxwell in order to advance case theory, I agree that it's pretty absurd, but it raises some interesting points.
It doesn't seem fair to deny a student from participating in mock trial because s/he is blind. At the same time, however, using it to advance case theory seems like it is a violation of the special instructions.
And that raises a question of how far a defense attorney can go... At what point, in crossing a blind Maxwell, does the attorney cross the line before it simply becomes mean? Where exactly is the distinction drawn? If I'm defending a client accused of murder and a blind Prosecution witness takes the stand, I would definitely want to discredit the witness given my duty to my client. How far can one go though?