Yes, he mentioned the crankarm came loose in the 1st post. What we don't know is how long he rode on it with the loose-crankarm. Any more than 1-2 minutes at most will result in the crankarm splines being destroyed. No amount of tightening the crankarm bolt/cap will fix that and there's no way to keep the bolt/cap tight once the crankarm is permanently buggered. At the very least, he needs a new crankarm and bolt/cap. The BB and spindle is most likely fine.