This is my theory. They is no way ace will beat cena 1 on 1. So jonny has realised that he could get big show to interfere in the match. Then give him his job back. Becuase at the time off the match he is not a wwe employee kayfabe. And cena cant give show a new contract ace can. So i see big show costing cena the match. Then i see him working for big jonny. Therefore becoming a heel.