Correct, what he did w̶o̶u̶l̶d̶ might not be legal in Texas.

However, you are not correct about deadly force to defend property.

https://statutes.capitol.texas.gov/docs/PE/htm/PE.9.htm

Scroll down to 9.42

There is nothing about having to be on your own land to defend tangible, movable property.

spez: looks like the cops got some sense and let him go

Correct, what he did would not be legal in Texas.

However, you are not correct about deadly force to defend property.

https://statutes.capitol.texas.gov/docs/PE/htm/PE.9.htm

Scroll down to 9.42

There is nothing about having to be on your own land to defend tangible, movable property.