Yeah you can check, go in to melee and move behind the mob on ur healers and not on ur caster and u should be fine. No need to change anything on the MCP tho.
Two things... I think campspot overrules the "move behind mob" option. Which is what I'm trying to fine tune here.
Second, I generally don't use that option "move behind mob" for my casters becauses it causes their casting to be interrupted frequently as there seem to be a lot of mobs that have ants in their pants and continuously shift around, also any slight knockback on my tank sends them all scurrying. So I am finding as I head into more difficult encounters (now wading into TOFS x 2) I am setting more and more campspots "on the fly" and its pretty much mandatory on all named encounters.
But as much as I need the squishies to stay safe on the pull, I also need the added dps from my healers plus the procs and debuffs esp from the inquisitor.