To be honest I wasn't aware they had tried for "hours" to deal with it. That does make me wonder if another option could have been considered. I don't know what but would hope an emergency vet in that time frame. The speed of impact certainly risked killing it and maybe the more humane course of action would be to shoot it...
Given they’d tried for hours, apparently, and in that time no vet appears to have arrived, maybe that option wasn’t viable, for whatever reason. Who knows?
I’m sure, given the coverage this incident has generated, the decisions of those involved will be thoroughly investigated. If they’ve got it wrong then I hope there is appropriate redress.