I am seeing your additional comments now for the first time. The comments were not shown on my original screen. Thank you for pointing them out as obviously my answer could have been more responsive had I read the comments.
In your comments you state "He's home now and relegated to the garage with a bottle of water and 1 pbj sandwich for the day, for an indefinite period of time (i.e. no bedroom, no A/C, no tv, no radio, no cell phone, no video games, no computer, no friends, no junk food, etc....). (A police officer suggested that's all we're required to do for him by law.)"
I do not agree.
I am concerned that spending a day in the garage in 90 degree weather may be unhealthy for your son as it poses a risk of heat exhaustion and dehydration. Child Protective Services could consider it as abusive despite your good intentions.
I suggest that you obtain professional counseling to assist you in disciplining your children.
Best wishes for a successful outcome. If you have additional questions, please do not hesitate to submit them to me directly.
THIS IS FOR INFORMATION ONLY. NO ATTORNEY-CLIENT RELATIONSHIP EXISTS. PLEASE CONSULT A LAWYER IN YOUR STATE FOR LEGAL ADVICE