Shadao
Aim to be a Pokémon Master
I don't think so. Alain could just be at the Prism Tower to stop Lysandre and maybe he isn't with the group because he's doing something or he's cut out of the shot.
How did Alain get on top of the Prism Tower without anyone noticing, especially if he is an enemy of Team Flare? And he can't be on the ground and on the tower at the same time. That's the same sunset. Additionally, the Prism Tower has been taken over by Team Flare and Clemont has to take back the tower from the inside, which makes it more unlikely that Alain somehow got past the grunts if Xerosic remains in control of the Tower. And now I've learned that Serena is going to rescue Chespie from Lysandre Labs. This to me is the keystone to everything regarding Alain's allegiance. What could be a better way of controlling your most powerful asset trainer than holding a sick Pokémon he cares about hostage?
Alain not siding with Team Flare becomes more and more unlikely to me.