The judgement is available[0]. It doesn't read to me like the judges were out to get him: they specifically reject the majority of the allegations of contempt made by the crown. Paragraphs 70-90 contain the interesting bit, and 70 is absolutely damning in my view. It basically reports Murray as openly writing an 'encoded' version of some of the claimants names in the form of some Yes Minister fanfic, in the knowledge of the anonymity order and with the intention that the code would be broken by close reading 'between the lines' (which he expressly encouraged).
That's an open and shut contempt, and courts do not play silly buggers with people who think that if they're very clever orders don't apply to them. Even given that the crown (the Scottish government, who were prosecuting Salmon and made the contempt of court complaint) are out to get Murray, that doesn't make him a martyr, it makes him an idiot.
[0]: https://www.scotcourts.gov.uk/docs/default-source/cos-genera...