What the title says - the spikes in the path aren’t lowering, so I am chilling with Genn and Shaw. I guess I’ll leave. 
I just had this happen to two of my characters in LFR. Apparently this has been happening for years and it’s just another bug Blizz ignores.
Are we talking about Alliance or Horde characters? In the Alliance version of the raid, Grong is the last boss of the LFR wing. The barriers aren’t supposed to come down in that case.