When the Dalai Lama imposed the Dorje Shugden ban, not only did he breach just about every freedom of religion provision in the Constitutions of real democratic countries and the UN Charter, but he also forced Shugden Buddhists into a spiritual suicide.
The basis of Buddhism is about the keeping of vows - Refuge Vows, Bodhisattva Vows, and Tantric Vows and it is in the keeping of the vows that a practitioner progresses on his training and eventually gains liberation. Conversely, the breaking of vows creates the opposite effect with the most serious consequences arising from breaking vows under the Fourteen Root Downfalls.
A ‘root downfall’ is so termed because such a fault ruptures our connection with the sacred world of the Vajrayana, into which initiation permitted us to enter. It makes spiritual practice impossible and thus utterly severs the root of any accomplishment. A ‘branch downfall’, by contrast, is a less severe fault, which merely delays such accomplishment."
http://www.tricycle.com/blog/vidyadhara-vow-reading-small-print-vajrayana . It is further understood that the breaking of a Root Downfall creates the causes for the practitioners to take rebirth in a 'Vajra Hell'.
When the Dalai Lama and his absurd 'government' the CTA insisted that Shugden Buddhists break their vows and commitments to their gurus, they do not care if anyone is bound by such vows or similar, the breaking of which results in terrible rebirth. To say as the Dalai Lama has on many occasions, that the breaking of vows has no negative consequences, is to make a joke out of taking the vows to begin with. One of the reasons why higher practices are treated as secret, is so that the guru will only give it to students who have proven to be able to keep their commitments. Vows is central to our practice and even if we were to disregard the spiritual aspect, at the most ordinary and mundane level, keeping promises is a crucial trait of a person with integrity.
So why does the Dalai Lama force Buddhists into the opposite direction? And what Bodhisattva would commit a person to Vajra Hell?
http://www.dorjeshugden.com/all-articles/features/theological-implications-of-the-dalai-lamas-religious-ban/