When you run two titans in the center have one snipe with a high impact sniper. To stun them 1000 yard stare worked for me. The other Titan uses touch of malice to melt the ogre. If there is a warlock that jump on the plate have him throw the first grenade the fire ball will keep the ogre in place.
You shouldn't have to though as ogres NEVER teleport. It's not in thier mechanics or attack pattern.