It does look like a hoax still to me. If you want a hoax to take off, then you need to keep it mild, and wrap it in truths.
If you go onto the uni website there is a letter sent to staff:
Coronavirus letter sent today
The thing I notice in this letter is it says:
It is important, too, that we get used to this way of working, not least because it may be needed later in the academic year.
Later in the academic year.
If they were saying that they didn't expect the students to return, then that line would be much more definite. This only says the remote way of working may be needed, not this "will" be the way of working.