I gotta tell ya that reading about nonsense like that makes me realize how much incompetence there is in the handling of short sales. I have not had a single one that I submitted an offer on get rejected. Not one! Sometimes they take an extra month or two, sometimes the bank counters slightly (never more than $10,000) and sometimes the seller rejects the lenders offer because they cant or dont want to. But I have never seen anything close to the 4 scenarios you have outlined.
For the record, I’ve closed a couple dozen this year and have as many in process.