Having lived in Dubai I have observed that it was next to impossible for an expat to win any case against a local or a local establishment. In this case, he did...and so I guess he became the target of the wrath of the opposition. They may have sued him on a false pretext which is presently unknown.

Blogging from India against an university cannot be a valid reason of his arrest in Dubai. There is definitely something more to this story that is not disclosed.