The way BASSA described his actions were those of "offending a few of his fellow employees" or suchlike.
I would suggest that posting pornographic images with the deliberate intention of demeaning the PCCC, which clearly identified itself as being the website of responsible BA cabin crew, can at least be considered disgusting, rather than being "offensive".
And in doing so, I would argue that he is surely bringing the company's name into disrepute, which I assume is in breach of his contract.
No sympathy whatsoever. In fact I think he's a five star, fur-lined, ocean going idiot.