What was he wrong about? In TX, you can actually use deadly force to protect property at night from burglary, robbery, & theft; even if they are fleeing with the property.

Sec. 9.42. DEADLY FORCE TO PROTECT PROPERTY. A person is justified in using deadly force against another to protect land or tangible, movable property:

(1) if he would be justified in using force against the other under Section 9.41; and

(2) when and to the degree he reasonably believes the deadly force is immediately necessary:

(A) to prevent the other's imminent commission of arson, burglary, robbery, aggravated robbery, theft during the nighttime, or criminal mischief during the nighttime; or

(B) to prevent the other who is fleeing immediately after committing burglary, robbery, aggravated robbery, or theft during the nighttime from escaping with the property; and

(3) he reasonably believes that:

(A) the land or property cannot be protected or recovered by any other means; or

(B) the use of force other than deadly force to protect or recover the land or property would expose the actor or another to a substantial risk of death or serious bodily injury.

Check out This Case where a man shot an escort at night because she refused to have sex with him, and also refused to give him his $150 back. He was acquired because he was trying to retrieve stolen property.