i liked his answer except for the part where he accused rav shach of having sinas chinum (that is not for us to say and definitely not in public like this.
From my view anyone, I don't care how great, learned, and holy someone is, but if they baselessly call my flavor of Orthodox Judaism a “cult” and "the religion closest to Judaism" and my rebbe "the madman who sits in New York and drives the whole world crazy" then I will say that person is spewing sinas chinum.
And don't think shach only had hateful things to say about chabad, he also saved plenty of it for many other gedolim and learned rabbis. For a gadol to say such hateful statements in public about so many other rabbis and fellow jews is practically unheard of.
Still, if he were moshiach
I would gladly accept G-ds will, but I would definitely line up to ask Eliyahu to please explain it to me.