He was already the second best two-miler before that. He didn't do any more today than he had done at Sandown. No reason to shorten him. It's just the bookies trying to sucker punters into thinking he can challenge Master Minded.
If the real MM turns up at Cheltenham Twist Magic can't hope for better than second.
surely the fact that he has won (a grade 1) away from sandown is reason enough to shorten