Like I said above, if he has a good lawyer he has already said all he is going to say on the subject.
No lawyer, not matter how "good", can create evidence that does not exist, or have evidence admitted unless a judge agrees, or have a jury receive a self-defense instruction unless the judge sees fit on the basis of evidence presented.
If there is a trial that does involve a defense of justification , the defense will have to present evidence in its behalf, and they may have nothing to present other than what the defendant (still) has to say.
This is Texas not the media he is innocent until proven guilty, not the other way around....
That is true in every state and in all US territories.
...and the police at the location of the shooting that spoke with the shooter felt he was justified sufficiently to let him go home and not to jail.
These virtual pages are full of accounts of people who were not arrested, and people who were not even taken in for questioning, who were ultimately charged.
That can still happen. Whether the case would go to trial, or be dismissed, or result in a guilty plea or a plea of
nolo contendere by the defendant is completely unpredictable.
We obviously do not know everything about the incident. We know that there was an armed robbery, in which, fortunately, no one was killed or injured. We know that the robber departed from the premises. We know that a citizen left after the robber and shot him.
We know that the shooting could be excused on the basis of self defense,
provided that the shooter had not threatened the victim first.
We also know that there are some possible nuances peculiar to the jurisdiction that
might come into play if the robber had been trying to escape with property that had been taken
from the shooter.
And it is at least conceivable that, even though the robber had not shot anyone during the robbery, his running around with an unslung rifle immediately after an armed robbery that had been witnessed by the shooter just
might be considered evidence that the shooting of a fleeing felon could be justified. Or not.