yup, I just read the series and he is part of the team.
[ Spoiler ]
he never goes astral though, he just stands watch over ryan mercury`s body together with another merc <axle?> in any case he knows some of the horrors that crossed the bridge may have escaped and be hidden away somewhere, he isnt sure whether darke is alive or not, & ryan & co believe when the horrors appear it will be war so they could be starting to train.. while the horrors other than mentioned wont be around for a while, their minions can be & rather threatening entities such as darke, the gestallt, etc etc..
ds