I don’t know anything of the method you are talking about but in some ways it sounds like it would be based on similar research to EMDR here in the states... it is using a different method than eye movement but has the same feel to it. There are mixed views on EMDR. Personally I am not a fan but my T was able to discover history I didn’t think was important that keeps EMDR from working with me.
Anyway, my bottom line having worked with a lot of T’s both good and bad is if it is helping and not causing harm then give it a chance.