Spy? Try another three-letter word: Cad.
That's to nice.
Both might well apply in this case. I have nothing but contempt for this man and his family.
Here are a few more: opportunistic, traitorous, disgusting, weak, bitter, nasty, shallow, disloyal, disgruntled, cheap.....well, I could go on singing. There's another word I'd like to write, but the webmaster might get upset and delete me. Don't we all just LOVE having to revisit this whole thing over & over now? The Left is in love with itself. God, give us peace.