I had to relocate a porcupine Mom and Baby once. They are not hard to "catch". caught it in a rubbermaid and then released in a forest. Tempt him in with fruit and close it when he goes in. Not sure you are willing to try but....it is possible. Unforunate that Wildlife control won't help you out.
My thoughts...at the very least scare him back to the mountain in hopes that he finds a home back towards the bushes. Atleast then he has a chance.
Good Luck......
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