The norm for kiteing Renauds in Turn 2 of the Second Coil of Bahamut (Turn 7) is having the Bard do it. However, my group does it differently. Please note that the idea isn't actually mine but I use it very successfully and since I cannot find anything so far on this forum, I thought I'd share.
I'm play a Smn and I actually kite the Renauds by myself. Sure it seems initially overwhelming but its very very doable. The use of ruin 2 to get tethered is easy enough, but one of the advantages we have over a bard kiting is the fact that our dots keep ticking for some time after we've shifted focus. However, out biggest advantage is tri-disaster. The advantage of tri-disaster is 2 fold. It has a bind timer of 20 seconds instead of the 12 seconds offered by shadow bind. The second is that it is an aoe. Simply put, if you use tri-disaster on a walking renaud while it's being kited and the aoe hits a frozen renaud, the damage from the aoe will kill any frozen renauds near by. This second part however, isn't much of an advantage. It's just nice to kill 2 birds with one stone.
However, because of tri-disaters cast-time, it should be precast. Also, if you are ever binding with tri-disaster, make sure you use it before cursed voice is cast. And if you end up using it after curse voice is cast, make sure you do it right after. The reason being that if your tri-disaster cast finishes after the renaud has been petrified, you will kill it, leaving you no refuge from shriek.
If you have any more questions, it will be my pleasure to answer them.