Meanwhile, we should all keep are samayas with our lamas clean, our practices consistent, train our minds, transform our habits, study as much as we can at home, dedicate our time to dharma and it's growth, understand Lam Rim, solicit/puja our sacred protector. Do the preliminary practices such as prostrations, mandalas, guru yoga, etc focussing on Je Tsongkapa as our outer yidam. Then consistently engage in Tantra practice quietly without fanfare by holding our three sets of vows, tsok, and generation/completion stages of any of the higher annutaratantra deities with intense concentration. If we do this, the Dulzin Dorje Shugden would be pleased and we would create the causes for this lineage to expand, grow and remain stable. Not only grow, but have the power to be a potent lineage to have genuine blessings to confer attainments. The only protection from everything in Samsara is our real genuine stable attainments. We would not be a 'dead' lineage unable to confer blessings as the samaya has broken with our gurus. We should channel our hate, pain, anger, disappointment, sadness, depressions and disappointments into our practices and gaining attainments or at least stable unchangeable dharma understanding/fath.
If what TK says its true (no offense TK!) then we should take a good long look at what Duldzin Dorje Shugden is, and what he wants. If he wants us to keep our guru devotion, do out practices, generate merit, is that an action of an evil spirit or an enlightened being? Results resemble cause, and we are all buddhist to believe in karma.
Another thing is - to look at the actions of the great Shugden lamas such as Trijang Choktrul rinpoche or gangchen rinpoche. Gangchen rinpoche travels around the world blessing different sites and building temples. No violence there.
Look at Trijang Choktrul rinpoche, who chose to disappear from the limelight rather than to be used as a figurehead and rallying point for the Shugden cause. Look at kyabje Dagom rinpoche, whose incarnation has been found but remains in hiding so that no further harm is caused by his murderers. Look at Geshe rabten, zong rinpoche, Domo Geshe rinpoche, lama Osel, etc who are all reincarnations of peaceful dorje Shugden practitioners back to continue benefiting others.
If those results are not dharma, I don't know what is. Results resemble cause. And the cause, Dorje Shugden, IS dharma.