Without sounding like a dick, but why not just leave the union and search for an active one? there is a Union thread on this forum, recruitment is pretty smooth in almost all cases. There is no reason whatsoever to stick in a dead union if all you do is rage about it.

About Holy soul points, you simply have to collect them over time. Not sure if you could have morrigan and masamune at this stage, since i wasn't able to get all Holy Soul points so far, and morrigan was low priority for me, i skipped her.