No pics, no clear diagnosis.
Doesn't sound like overwatering alone. Sounds like overfert or pH or both. 'Crispy' doesn't come from excess water alone.
Why would you purposely damage roots on an already stressed plant?

Drill more holes, and big ones, in the sides of your pot as an emergency measure to get more oxygen to the root zone.

You couldn't post, but you could still read, and this is advice that has been given to a couple other people recently with soggy dirt problems...