I have a Dwarf Jade that came wired to its pot. I need to take it out to treat root mealybugs. I am told to first spray the roots with water and then 10% rubbing alcohol and 90% water. (if this is the incorrect method for Portulacaria afra or Dwarf Jade, please tell me) Anyways, I'm not sure if I should rewire my tree to its pot when I am done or not. Thank you!

I would re-wire it down. Ive had a tree start to grow out of its pot because it wasnt wired down.. hehe.

If you really worried about the root mealy bugs you can just cut off all the roots and pot it in new soil, Portulacaria is very hardy and should easily grow new roots. I've just recently taken huge cuttings from one and simply put them in the ground.