Well, if you jumped before they did you are fvcked. Unless YOU were threatened or they were on your property and being a threat you are fvcked.
I have a family member that is a Sherriff and in the country you get it every so often. Someone breaking in your house at 3 in morning you can defend yourself. But if someone is stealing your lawn mower and no weapon you can not use deadly force. The lawhas many loop holes and such.
All in all, seems like you leaped before they did and Johnny Cochran couldn't get you out of it.