Realistically, once he receives assurances from the Home Office that no action will be taken, that is the end of the matter, and it would be legally problematic for a subsequent government to reverse that.
In his shoes, would you be brave enough to speak out politically against a government in power, given his situation?
Would I risk that, given current government threats against both refugees and the continued availability of effective judicial review? I'm not sure. Probably not.