I did a removal "ceremony" once with a channeler with whom I not long after cut ties because I realized she was manipoulating me, but regardless, what struck me about the process was the things I was asked to think about in conjunction with supposedly her guides and mine was that it reminded me of the type of work one does in steps 4, 5 and 8 and 9 of a 12 step program, which I discuss here for those not familiar https://medium.com/know-thyself-heal-thyself/spirituality-redefined-ff45cb53eaf2

I suspect the practice of writing letters and then burning them may be another method of cord removal between humans.