Nah, "Group A, Codename: Heavenly Justice" - consisting of Darius, Mallow, and Jace - will charge forth to the group of three goblins to engage them in melee. Since you will be attacking them from behind, they will not get attacks of opportunity... however, if they attempt to move to the levers, YOU will get attacks of opportunity, giving extra chances to obliterate their group.
"Group B, Codename: Bullet Hell", - consisting of Garrick and Lindon, will fire at the lone goblin in hopes of getting it before it pulls a lever, focusing entirely on it.
If all goes well, the goblins will be so much red-colored mush in a round that their appearant tactics/trap won't be effective.