I understand your point but can't anything be stretched to absudity? In the rules of logic, the fallacy is called Reductio ad absurdum (Latin for "reduction to the absurd")
I see Terrell's expansive definition in the same way I see Jesus' definition of adultery as being equal to lust in your heart. This is different from reducing it to absurdity in that Jesus is exposing the heart's motives, the secret agenda that only God sees.
Consistent with Jesus & Buddha, we are called to love our enemies & pray for those who abuse us. An expanded definition of violence is meant to transform our own consciousness of our propensity to be violent when we feel attacked or angry. In the face of our own human-ness, a biblical understanding of violence challenges not just our physical reactions but also our thoughts, and our secret world so that we may truly follow Jesus' way.
god over me, god before me, god behind me; on thy path, o god, thou in my steps...