In the Kagyu video at around 50:00-58:00 he talks about Mikyo Dorje (Karmapa 8) backing away from the Jonang-esque Shentong of Rangjung Dorje (Karmapa 3). Karmapa 8 and his followers are said to see the Buddha Bodies as self-empty, but other-empty "in the way they appear".
I don't' think his interpretation of what that means is right, but in any case it is pretty weird.
There is a tradition of making a distinction between two different perspectives on the nature of emptiness: one is when emptiness is presented within a philosophical analysis of the ultimate reality of things, in which case it ought to be understood in terms of a non-affirming negative phenomena. On the other hand, when it is discussed from the point of view of experience, it should be understood more in terms of an affirming negation.