CAAs grounding of the L2 certainly points in a little different direction then the suspension bars or maintenance error. Just my opinion! If they were determined it was an issue with suspension bars or airframe fittings then they may have included the L/L1 (not sure how many are still flying in the NS), however, maintenance error would not warrant the grounding of another type.
Again I may eat my words but have not believed the suspension bar idea from the beginning.