It's my personal belief that there is something abundantly wrong with someone who thinks they can blatantly bait and lie in wait. This guy deserves the death penalty.
Someone leaving "bait", then lying in wait, with a clear intention of committing murder does not seem to be the intent of the castle defense law any more than the stand your ground law allows one to follow someone, then kill them.
The jury, in this case, was right to find the man guilty of murder.