Urgent Advice Needed

Hi my mum's 10yr old, male Staffie (Rocky) had to go to the PDSA 2 days ago. His back legs stopped working suddenly. He still has feeling in them as he shows signs of pain if you put pressure on his legs, paws or hips. The PDSA vet did some basic checks but wouldn't give an Xray or administer any proper tests on him. They suggested that they could put him down then and there or they could give us 4 weeks of pain meds and hope he heals naturally. We chose the latter, but something isn't sitting right with me as we still dont know what's wrong with him as they didnt know themselves. I wanted a second opinion on whether I should go to another vet. I cant really afford to go to a private vet but if there's a chance to save him I will pay anything. Something about the PDSA's response just didnt sit right with me. I just wanna know if their response was the same as any vet would give or whether I should push for xrays and other checks?

I'm sorry for you and Rocky - this sounds so hard.  Ive tried to answer in the other post and explain how a vet may be thinking about this case.  It sounds as though the vets may be restricted in what they can offer;  the key is to try to ask lots of questions.  Wishing you all the very best.