Very happy update! He was strong enough for his dental today and pulled through absolutely fine. Unfortunately for the poor little thing, his teeth were in really bad shape. He needs regular dentals due to a twist in his jaw, unfortunately this time the dental happened to be timed so close to his bladder stone surgery. He also had a laceration on his mouth, the poor thing. However, even in the carrier case on the way home, he's immediately begun munching on hay! He's quite happily stuffing himself with hay in his hidey lol.
He's currently on Baytril (0.4ml twice daily) for the laceration/any potential infection for 7 days, Cisapride (1 tablet dissolved in 1ml of water, 0.2ml twice daily) as a gut stimulant and Loxicom (0.2ml once daily) for pain management, both for 12 days. All of which he's had before - though we were told to stop the Baytril if it caused diarrhea, which is how this thread started lol.
He'll still be watched carefully, especially as he gets over the anesthetic (though he seems completely bright and is eating already) and be weaned off of his "special" diet (syringe food, bowls of grass and muesli) as we get him back to his more normal food. Thank you to everyone for all of your help and support - I truly thought I was going to lose my boy at some points, but he has been a little fighter.
The vet believes that they are little sores on his feet, but isn't too concerned about them - but he's on Baytril for his mouth anyway, so maybe it'll help? He's also already more active too. I'll keep an eye to make sure they don't get bigger, more hot, etc.
I'll post a small update if he's essentially healthy again, and will give more updates if he has any further health issues. Fingers crossed!
And of course, an obligatory pigture! So much hay lol