On one hand, it sounds like the homeowner was subjected to repeated burglaries and fed up. I totally understand and can't say that I wouldn't eventually snap under similar circumstances.
On the other hand, he was indiscriminately firing into a dark garage. Yeah, he should have shouted "Come out with your hands up!" Yeah, he might have considered that course, but didn't know how many perps were in the garage or whether they were armed.
If the prosecution goes for something more than a third degree manslaughter conviction, I'd probably vote to acquit. Otherwise, I'm not so sure.
Basically, I'm willing to cut the homeowner a little slack due to the repeated burglaries just as some juries cut defendants a little slack who are products of bad environments.
In my garage/house all bets are off. I shoot.
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.