Collision at Safety Bag - ASA Rule

[davidrimi]

I've done a lot of research but found nothing on point.

Grounder to 1B. He runs across the double bag and steps on the safety bag and collided with the batter-runner. Batter-runner called out.

My thought was that since the 1B ran across and stepped on the safety bag instead of rounding and stepping on the inside bag, it caused an avoidable collision which is why the bag is there in the first place.

Or, alternatively, the 1B had no right to touch the safety bas since he wasn't pulled into the bag by an errant throw.

Your take?