In the first 3 phases, wouldn't you be dropping spears in melee, or when did you fistweave?
No, blizzard decided that monk healers count as melee so they can not be targeted by abilities that target only ranged and healers.
Examples of this are spear on iron qon, the lightning ball on jin'rohk, biting cold/frost bite on counsil, caw on ji-kun, and shooting stars on twin consorts.
This can occasionally be annoying for other healers and range in the group for things like jin'rohk's lightning ball when it increases the RNG of you getting them. on some occasionas it's useful for a monk to safely be able to stack in melee without causing issues (iron qon)
But do you have any idea how much spirit/mana regen we need to do that? LOL. PW:S is VERY costly
Usually disc can afford to be rather frivolous with it's mana expenditure cause of how difficult it can be to go oom as disc. I've seen the disc in my raid go oom cause they were doing 140k HPS for an extended period of time but it's impressive that they even lasted as long as they did.