It's such a great and brave move. I'm really respect Kensur Rinpoche, he will not care about what pressure or difficulty he might be facing in the future after his announcement, he will still do it. A live example is telling us nothing is wrong with Dorje Shugden practice, because his guru will not passed him something is not right, as simple as that. If his guru was wrong, that means he's wrong too, so all his students who graduated from both Gaden Jangtse and Gyumed Tantric school are wrong too. I'm sure all high Lama such as Kensur Rinpoche or Samdhong Rinpoche must have a bigger picture by "stay in the closet" behind this.
I'm just making a guess here. If both HHDL and Samdhong RInpoche actually are hand in hand create another scene for us, and by doing this "scene" actually more peoples will be benefited,
Scene : If Samdhong Rinpoche's guru is Kyabje Trijang Rinpoche, and he was officailly recognized by the monastery system, we shall never doubt about his attainment, same goes to HHDL. If both Kyabje Trijang Rinpoche and HHDL are sharing a same thought with their clairvoyance, all this chaos we are experiencing could be all premeditated . Let's us think carefully, if without this controversy will a lot of people know about Dorje Shugden ? It's just like if HHDL didn't exile to the west, how many of us will know about Tibetan Buddhism? How many of us will know about TIbet ?
From my understanding Samdhong RInpoche holds very strong guru devotion towards HH Kyabje Trijang Rinpoche, he will never goes against his guru mind. He might already premeditated everything before his said or to do something harsh to the public, because by doing such actions might bring more people's curiosity to check out what is this "Dorje Shugden" all about. By viewing, hearing, speaking or even googles any images of an enlighten being, Dharma imprint is planted, and some imprints can be open, so eventually more beneficial. The more chaos it is, more people will actually got benefited in that case.