Question about a Monk Archetype

[Michaelsaurus Rex]

Does the redirection ability of a Flowing Monk interrupt the attack in which causes it? I'd say it doesn't, but I just want to make sure.

Redirection:

Redirection (Ex): At 1st level, as an immediate action, a flowing monk can attempt a reposition or trip combat maneuver against a creature that the flowing monk threatens and that attacks him. If the combat maneuver is successful, the attacker is sickened for 1 round (Reflex DC = 10 + 1/2 the monk's level + monk's Wisdom modifier to halve the duration), plus 1 additional round at 4th level and for every four levels afterward (to a maximum of 6 rounds at 20th level). The monk gains a +2 bonus on the reposition or trip combat maneuver check and the save DC for redirection increases by 2 if the attacker is using Power Attack or is charging when attacking him. The benefit increases to a +4 bonus and an increase of the saving throw by 4 if both apply.

At 4th level, a flowing monk can use redirection against an opponent that the flowing monk threatens and that attacks an ally with a melee attack. At 8th level, a flowing monk can make both a reposition and a trip maneuver as part of a single immediate action with this ability. At 12th level, a flowing monk can use redirection against any opponent that attacks him in melee, even if the flowing monk is not threatening the opponent who attacks him. A flowing monk can use this ability once per day per monk level, but no more than once per round. This ability replaces stunning fist.

[Umbranus]

The redirection happens before the attack which triggered it but it doesn't disallow making it.
If the attacker did a 5ft step to get in range, he's out of luck as he can't get back in range to make his attack.
If he made a standard move and still has some of his move left I guess he can just get back into range and try again. But he would provoke normally with that move.

Redirection (and the flowing monk) could work out nice with a range weapon like the double chain kama.

I played one for a short time but I changed it for another pc because I'd build him around the concept of having enemies provoke aoos and use those to redirect them away from me... which isn't possible per RAW. After we noticed I changed the pc.