Thanks for all your answers, I think all responses could be justified.
While this scenario has legal and ethical components, it's unfortunate most state game agency's place the burden of innocence on the hunter....in other words, you're guilty till proven otherwise. To have an untagged animal in your possession would be a crap shoot, some officers might let it go, others may not....loosing hunting privileges for a couple of years for illegally taken game charge is not worth that risk. (CYA, "cover your arse"...that's why I snapped a photo before taking action)
I left a call into the game warden over a week ago regarding a different incident, still hasn't returned my call. Waiting for the proper authorities to respond could take hours if not days. I didn't consider that a viable option. We had other time commitments and hanging around wouldn't work. The location was over a mile from any roads and not easily accessible for LEO's and authorities.
Didn't want to cut the fence, (it is on my property) no tools on hand to make the repairs. Injuries were not life threatening, no major blood loss and the deer appeared healthy. We spread the wire strands apart with a stick and released the buck. He quickly sprinted off and jumped two more fences. Doubt his leg will heal to full recovery, but he should survive. Missing a front leg would be far more difficult than the use of a hind leg.....I think he'll be fine.