> Maltese-registered cargo ship
This appears to be a deliberate attempt to cast doubt as to the "true" operator or entity controlling the vessel. The ship is "Maltese-registered" because it's owned by a Maltese company, 'Ruby Enterprise'. It's destination is Malta.
> Spurning the obvious solution of a return to Russia,
Is this obvious? As the article admits, the vessel is seaworthy. Why would a seaworthy ship carrying some exported product return to the origin port?
I think this BBC article[0] offers a much more balanced take on the events.