Thank you for this interesting bit of information! this is something new indeed as the Dalai Lama and his camp, as well as the Nyingmas always assert that the 13th Dalai Lama was a huge opposer of Dorje Shugden and that he banned it, but Pabongkha opposed the ban and continued the practice and "corrupted" the current generation of Gelug practitioners. The saddest part of all of is that this is the exact same lies that the CTA champions and they distort history again to make Pabongkha look bad just because they want to justify the Dalai Lama's ban on Dorje Shugden. They do not mind at all to fabricate nonexistent history just to make them look right even though distorting history is just wrong in more ways than one. I wonder what the backlash would be once people discover cold, hard historical evidence that CTA has been lying to them repeatedly over many things and they were duped to fighting for CTA's causes, like a cult of sorts. People giving up Tibetan Buddhism en masse? CTA forced to disband? Nobody likes to be lied to after all, for a lie to be credible more lies have to be created to cover it up. In the end, what we get is a huge knot of lies.
lies can only stand for so long before it unravels and when it does, things will be interesting. From here, we can see that CTA has continuously been covering up on its history and continuously distorts it just for the sake of appearing to be right or just to support something that is not true. There is a limit to how much lies that can be created these days, unfortunately, for the CTA because people will eventually dig them up and CTA will be shamed and exposed.