I hope your right! I think the weevil would be easier to cure than clubroot
I did cut one of those roots in half and it looked very uniform right through (no bug tunnels, etc. The colour was consistent too.)
There is still a few more Pak Choi in that row. I plan on leaving them a bit longer to see what happens
the last ones had only stopped growing, they hadn't begun dying or changing colour. I noticed something was wrong as one of the plants swollen roots was growing up an inch above ground.