Chaos Hammer, Slow, and Haste

[Tamago]

Hey, folks!

I'm wondering about the interactions between haste and chaos hammer.

Chaos Hammer wrote:

You unleash chaotic power to smite your enemies. The power takes the form of a multicolored explosion of leaping, ricocheting energy. Only lawful and neutral (not chaotic) creatures are harmed by the spell.

The spell deals 1d8 points of damage per two caster levels (maximum 5d8) to lawful creatures (or 1d6 points of damage per caster level, maximum 10d6, to lawful outsiders) and slows them for 1d6 rounds (see the slow spell). A successful Will save reduces the damage by half and negates the slow effect.

The spell deals only half damage against creatures who are neither lawful nor chaotic, and they are not slowed. Such a creature can reduce the damage by half again (down to one-quarter) with a successful Will save.

Slow wrote:

An affected creature moves and attacks at a drastically slowed rate. Creatures affected by this spell are staggered and can take only a single move action or standard action each turn, but not both (nor may it take full-round actions). Additionally, it takes a –1 penalty on attack rolls, AC, and Reflex saves. A slowed creature moves at half its normal speed (round down to the next 5-foot increment), which affects the creature's jumping distance as normal for decreased speed.

Multiple slow effects don't stack. Slow counters and dispels haste.

(emphasis mine)

So, my question is: multiple PCs are affected by haste, and then the BBEG slaps a chaos hammer on them. If they fail the save, they are subject to the slow effect.

• Does the slow effect dispel the haste on that PC?
  
• Is the haste dispelled completely, or only for the 1d6 rounds of the slow?
  
• If the haste is dispelled, is it only dispelled for the characters who were lawful and failed their saves? That is, are other PCs who are under the same haste spell still hasted? (And does it make a difference whether the caster is one of the affected characters?)

Thanks!

[Gilarius]

I'd say yes, the slow effect from chaos hammer negates the haste of characters affected by the hammer.
Since it's a lesser effect of the chaos hammer, I'd go for it only temporarily suppressing the haste for 1d6 rounds and it resumes working afterwards if there is any remaining duration at that time. However, that's definitely a GM's call.

Your final question is much easier to answer: only affected characters are affected. It doesn't matter if the caster is dispelled, the spell continues for anyone unaffected by the chaos hammer, just as it would from a normal dispel.