the shooting was pretty justified given they were actively trying to break down his door.

Especially in texas.

At least as far as criminal law goes. However, I've heard of some pretty wacky situations where defending your home like this can result in some civil liability.
Not in Texas.
There is a difference between criminal law and civil law. Yes, you can get sued for self-defense in civil court in Texas: https://www.walkertaylorlaw.com/sued-for-self-defense-in-texas/
Sued for Self-Defense in Texas | Walker & Taylor Law

A common question: can I be sued for self-defense in Texas? Check out our complete breakdown!

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