What I heard was that Bunn didn't want to write the teen O5 in the first place, but since he was already writing them, he intended for the teen O5 to be used for that storyline. Then they got pulled for a story outside Blue and he had to use Lorna instead.

There are various things in his run that I wondered if it was Bunn's decision, or if editors above him forced those things on him. Yet with the absence of anything that showed it was out of his control, I had to assume those things were choices he made.