I think it was great that Joey got to be in that match. Casual fans do not know who Joey is and are not going to give it a second thought. Joey's career is not going to be hurt by their perceptions because they probably dont even remember who Joey is and Smackdown was only a few days ago. This gave Joey experience working in front of a large crowd and perhaps more importantly more networking contacts. All it did was help his resume in my opinion. Aside from this, he did a great job of getting beaten up. I know that sounds funny but he really did. That shit looked like it hurt really bad and it probably did.
I dont see how this was a bad thing at all.