When Gordon and the two men teleport into the secret cargo hold, he is not holding onto either of the men and neither of them were touching/holding onto him. In all other instances, the only way someone was able to teleport with him was if he was holding onto them or if they were holding onto him.
Simmons uses defibrillator paddles on Calvin through his t-shirt, the paddles must make contact with bare skin to have any real effect.
After Cal dumps the glass of water over his head inside the force field cell, the splash pattern on the floor extends past the yellow line where the still-active force field is.