So far everything posted in here doesn't work when you look at it logically.
"Pieces fall in place": When the fighter used his daily power he can't even use it on a paralyzed, sleeping or otherwise helpless enemy. And in such situation he has enough time to line up the strike however he wants. It makes no sense that he can't do his perfect move again.
1: Apart from giving every fighter an inherent spiritual element, why can't young fighter not learn the tricks of ancestor fighter so that he can use his tricks without guidance?
2+3: Then why can the fighter do other highly stressful daily moves? Why can he otherwise continue to fight normally?
4: Using dailies has nothing to do with the current situation and the HP of the fighter. One would assume that with 2 teammates down and the fighter bloodied he would have enough adrenalin in his system for this to happen. Too bad that he already used his daily in a much less dangerous situation before.
In the end there are
imo just 2 options of how to deal with them. 1. Explain all fighter abilities with magic and 2. Don't think about it (not usable when you want to think while playing D&D though)