The myth of losing tail rotor effectiveness  

Agreed....one of my questions I'd ask pilot coming in was you are heavy and near the edge of your performance and the LZ you are going to you will have a choice of a perfect left or right crosswind, which one do you take.  Assuming counterclockwise main rotor a decent amount of them would put the wind to the right to "avoid LTE"

Then we talked about the wind from the right pushing on the vertical fin/tailboom which pushes the nose right, forcing more left pedal which requires more power and if you were already close that may be what pushes it over the edge.  The left crosswind might require some dancing on the pedals at the bottom but at least its helping the nose.