yeah, my bet is he buried a supposedly dying cat hoping the earth would finish him off. what a dick.
i'll admit that treatment for those injuries would be expensive, but at least fucking take it to be put down. let this be a lesson. they all come back to you.
eta: i'm not really a 'keep the cat inside' kind of girl. in my experience, all my cats have lived a much happier existence being indoors/outdoors. one cat i had in a studio apartment on santa monica blvd. was constantly getting crystal dick - i spent a couple grand on his penis over time. once i moved somewhere he could roam about, his crystal dick cleared up and he was much more happy and friendly.
i mean, sure there are risks, but with a female cat or one that has been altered, they don't usually roam too far. if i were a cat, i'd take a shorter more adventurous life than a longer, boring one.