This is what happens when you tune for bulletholes when shooting a stiff spine or torquing a bow.
I bet you can tune those arrows with walkback and group tuning and they will shoot fine but not get a bullet hole.In this case,fine is a relative term.
You can not have the arrow nodes properly aligned as well as your form being sacrificed when trying to shoot an arrow that is pointed off to the side.
A little about nodes
http://www.huntingnet.com/forum/tm.aspx?m=3372984