Although your summary seems correct, it probably omits how vital funds were to the strike, how legal (seems like not very much) was taking help from MI5, and the point that’s also omitted from the article which is if the court decision to fine the union was legit in the very beginning.
I’m not familiar with anything related to that strike, but that very much looks like breaking checks and balances and going the totalitarian “we know better” way, even if not to the very depth of it