in forward flight it would impose some pretty dramatic loads.
fdr.
To explore; perhaps a major vibration with nodular points along the blades until it whips badly enough to cause the opposite blade to fail and begin tearing - the one with the good bolt - that causes a sudden rotational shock load - which causes its coning bolt and the first failing coning bolt to fail simultaneously?
The damaged blade stays in one piece because at the time of failure it still had not lost the torn piece and immediately had a different flight vector towards the blade tip thus allowing the torn bit which was attached at outer end - to stay still attached.
tet.