I've had a brief look at the document. It's not a declaration of His Holiness the Dalai Lama joining Khadampa, it's just a text of questions to ask His Holiness, which include at one point, questioning Dalai Lama's action and as a refuting point, proposing that Dalai Lama should join the re-established Kadham.
It is a document to refute the teachings on Guru Devotion that His Holiness has given in Gaden Shartse Monastery on February 5th 2011.
I have roughly translated that section only (on page 12 & 13) as below for everyone's reference:
Here we would like to respectfully expostulate with His Holiness the 14th Dalai Lama, we know that you have received the 16 Circles of Kadampa lineage from H.E the 3rd Trijang Rinpoche. But, just like H.H. the 5th Dalai Lama, Your Holiness can directly receive from (the Kadhampa's) H.H. Dromtoenpa all the teachings of Kadam tradition, especially the 16 Circles of Kadampa, and you can give up the lineage gurus that relies on Gyalpo Shugden.
Also, as you are (called) a reincarnation of Dromtonpa, so if you promote the Kadam tradition and make those who have sworn to follow the 3 main gelug monasteries to focus on the 16 Circles of Kadampa, and to abandon the teachings received from masters who relied on Gyalpo Shugden, that would be the best.
As you know, I know, the sky (heaven) knows, the earth knows, from your first incarnation H.E. the 1st Dalai Lama until H.H the 13th Dalai Lama couldn't do anything to overthrow the Gelug, you are already prepared, aren't you?
Now is the time, please go ahead (to overthrow)!
Shouldn't you follow your favourite, the Kadam tradition widely propagated by your previous life's H.H. Dromtoenpa, now re-established by H.H. Kadham Trichen Rinpoche ?
Isn't it time for you to test the devotion of your students who followed you?
If those students are really loyal, not only can you eliminate the power of the orthodox Gelug who relied on Gyalpo Shugden, you can also totally wipe out Gelug, and hence distance yourself from the lineage of Gyalpo Shugden and New Kadampa, if not, in 20 or 30 years time, all Gelugpas will not only rely on Gyalpo Shugden, and widely promote Je Tsongkhapa's Lamrim and other teachings, at that time, Your Holiness the 14th Dalai Lama will become like Emperor of Wu, Xiang Yu, Gong Yi, Ming emperor Chongzhen, Qing emperor Pu Yi while the Gelugs who oppose you will become like King of Yue, Han emperor Liu Bang, Koryo Dynasty Wang Jian, etc.
Hence, the best way is to swiftly join your favourite Kadam tradition, that has been re-established.
If (you) follow what I have urged you to do, not only can you remove yourself from the unpleasant experiences since H.H the 5th Dalai Lama, you will also become a famous teacher of the Kadam school and make the green (Kadhampa) tradition to continue for million of years!
* The names in blue and red are both historical leaders/ emperors etc in Chinese history. Those in blue were ousted/overthrown by those in red; or are rivals. I am not very well read in Chinese history, but briefly this is what the relations of those in blue/red are.
Obviously, this text is to appeal to the Chinese/ Taiwanese/ Chinese in South East Asia or all over the world who knows Chinese history, and who are the main target "market" of the Kadhampa group.
There are also very good answers given by H.H. Kadham Trichen Rinpoche:
a) How Kadhampa has given up Dorje Shugden because they have reverted to Kadam teachings and hence do not rely on Dogyal (Shugden), who is a Gelug protector.
b) Kadham Trichen Rinpoche hasn't gone to have an audience with His Holiness after Rinpoche has given up Dorje Shugden, and that could be the reason why His Holiness the Dalai Lama still thinks Rinpoche practices Shugden.
c) Kadham Trichen Rinpoche said, in response to why Rinpoche hasn't gone to meet H.H. the 14th Dalai Lama:
- If having an audience will help the development of the Kadam (Kadham) school then possible, but the core development of the Kadham school is among Chinese, hence meeting the Dalai Lama would not be of any big help either.