Can anyone comment on the risks of posting such an essay while still living in China? Is this considered safely within the lines, a calculated risk, or something else?
(Or has he already left China before posting the essay?)
(Or has he already left China before posting the essay?)
Between the fact that he was forced out of his position, and that he says he's "grateful" not to have been detained, I imagine he feels safe enough to get a shot off as he leaves. I don't think the government would get rid of him with an ostensibly administrative dismissal, and then turn around and detain him on the back of this post, as he was about to leave the country for good; it would look heavy-handed.
Or, as you say, he could already be gone... I don't know.
He is leaving so they probably aren't sweating it and he serves as an example to others about losing your job.