That is more roots than I imagined - personally, for now, I wouldn't do anything except raise the bottom of the pot upwards off the ground with something - bricks or even sized rocks
keep roots intact until you decide to repot - like Nancy
@Murky said, the pot bottom will probably need to be cut off -
I too would recommend a shorter wider clay pot - most of my plants get a 1" layer of rocks or broken pottery shards - this bottom layer will force the plants roots to grow outwards instead of downwards -
I too would recommend raising the plant within its new pot from 1 to 2"
Try to do all maintenance (like repot) in the spring - that way the plant has all summer to recover and grow