Losing a good buddy or family member like Odin can really knock the pins out from under you. I was 18 months sober when our best dog ever died at the age of 15. When I found his body on the lawn, I became aware of something like his soul hovering above the treeline at the back of the property. I was granted another spiritual insight that night. As good a dog as he was, his best act, for me, was his last - letting me see how the energy of a soul leaves a body and returns to the Source.
You can learn from your relapse without shaming yourself for it. I love that you are back, and badder than ever!