Jury nullification is a good answer.
While I would not want to shoot a burglar who presented no immediate danger, I completely understand the sentiment and would not ruin a man’s life over shooting a criminal who was stealing his property. The homeowner exchanged substantial amounts of his time (in the form of paid work) for the property that was taken in prior thefts and the property that would have been taken that day. Stealing his property is stealing a portion of his life. The criminal played a stupid game, and he finally lost. Good riddance.
The prosecution has a heavy burden of proof here. OTOH, so does the defense. I hope the homeowner has been ably coached by his attorneys.
Remember the guy in Minnesota who offed both of his housebreakers execution style and then bragged about it? It didn't end well for him.
This Missoula man has to at least pretend to be genuinely shocked and remorseful, but scared for his life at the time he fired into his dark open garage.