Reported for trolling.
Your only option sadly is to try it in different north/south combinations until it works. You could try changing the ops leader, or regrouping all together then resetting as well. Really stinks because you have to re-clear trash between each reset.
My Encounter:
8m HM - We got the third row complete once and were in the process of completing the third row 4 times before it bugged and we couldn't click the console anymore.