well it depends how many roots you cut off. if you cut off more than half, then i wouldn't repot but instead sphag and bag. the instructions for this can be found at
Sphag-n-Bag
if not, then i would have repotted as soon as i had finished cutting off the bad roots, sprayed with hydrogen peroxide, and increased humidity but not the watering. hope this helps. if not, keep asking and you shall receive an answer...