It is true that the Dalai Lama changes his mind faster than lightning! Why is that so? Why a person who has so much wisdom is manifesting so many mistakes in recent years? He was not like this before, he was so well respected and he even won the Nobel World Peace Price.
There was this bigger picture theory. It is said that even though the Dalai Lama and Dorje Shugden might appear to be against each other, they are actually working together to bring Dorje Shugden practice to the world and to preserve Buddhist teachings. It actually sounds logical. If it was not because of the ban, the Chinese government will not give so much support to Dorje Shugden lamas and monasteries to continue to spread and give Dharma teachings. It is very important to preserve Buddhism in China because the majority of the Buddhists are in China.
I think the Dalai Lama keeps manifesting mistakes and making himself look unreliable is to prepare to lift the Dorje Shugden ban. Because if he is making so mistakes, his view on the true nature of Dorje Shugden can be a mistake also. One day, he will turn around and say he has made a mistake, Dorje Shugden, in fact, is an emanation of Manjushri and he is an enlightened protector we can rely on.