Yup
he was (quietly) encouraged to be this kind of player,
by every team he was on. He got bonuses for certain efforts.
He also had the priviledge of playing with Aikman, Montana & Young
garnering two Super Bowl rings along the way. (They are gaudy, as you'd expect.)
He told me that the only opponent he couldn't handle
when he pulled to block a defensive player was Bruce Smith (Buffalo Bills).
Smith threw him out of the way like a rag doll when they'd meet on a running play.
PS/ His brother Liam's behavior was worse, and from personal experience
with him, a fishing guide on the Trinity River where he lived, I don't dispute that
possibility.