I guess it's a bit late as you've killed it now but this might help other people a little...
We finally managed to kill it ourselves in the last raid;
http://www.worldoflogs.com/reports/r.../?s=757&e=1270
561 Cleave trinket (Sigil of Rampage Norm +2Upg) did 2.3% of my overall damage, without dps cloak/meta.
With 2x Brew Master monks (lucky me)
Starting on Mantid side:
2x Monks, after first one dies;
1x Big When it's on 20%~
1x Big + 1 Small immediately, +2 smalls delayed, when the big one is on 20%~.
1x Medium, When big dies, keep 2 mediums up constantly, and pull 1 small as you see fit.
Mogu:
2x Monks, after first one dies;
1x Big, get the healer or ranged dps to pull small ones, when you can fit them in
1x Big, as above. When it's nearing death (just after it's last fracture) pull:
1x Medium, if it's an urn, pull more smalls or 1 more medium, if it's an anima golem you may want to focus on him on his own - If you're confident, keep 2 mediums up at all times.
After the Anima Golem casts "Crimson Reconstruction" (spawns a red pool under neath him, which heals everything) you can taunt him and strafe away/roll and he shouldn't get a single tick of his heal.
http://www.youtube.com/watch?v=-PlSoSXw8OY