Whether or not Dalai Lama have purposely ban on Dorje Shugden as a form of comedy or to harm. In our side here, we are not to comment on High Lama who are recognize by the lineage Gurus.
As a student, this ban have enable me to study and understand more on Dorje Shugden. Why there is a ban and people are suffered as a consequences of this ban, and yet the ban still appear. If we truly wanted the ban to be lifted fast, it is not for us to comment on Dalai Lama, but, to understand the source of this ban and to think wisely on the issues of the ban and make more people understand on Dharma.
By disagreed, angry and revenge in action by not supporting people who contradict to our mind, it doesn't help us much in spiritual practices. In fact, it bring more disharmony within us , where, we should be united, make people more understand on practices of Dorje Shugden and teachings of Tulku Dragpa Gyelsen, but, we have not do it.
Everyone, have the right to choose their Guru. And once the relation is bond; is not up to us to comment on the guru he or she chosen. We can never understand our own mind without a proper guidance from a Guru, thus, when we have Guru, the devotion on the Guru is essential to get our ego mind stabilize and not flippant. When we see flaws on a Guru, we should ask, it is our flaws too, why we have the karma to see the Guru's fault ?