first things first -
JDA
you cannot affect physical world while in astral shoes. You could affect them if they would be astrally active (an astral perception would be enough) but none of them is.
Manifesting
If a purely astral form such as a spirit or an astrally projecting magician
wishes to interact with the physical plane, she must manifest.
Manifesting is a psychic effect that allows an astral form to make
itself visible and audible on the physical plane through an act of will.
Manifesting takes a Simple Action to engage or disengage. Manifesting
characters and spirits appear on the physical plane as ghostly, hazy
images and may freely communicate with physical characters. Unlike
the Materialization power of spirits (p. 296), manifesting does not
create a physical form, and so the character cannot physically interact
with anything, nor can she be harmed by physical attacks. Because
manifestation is a psychic effect, manifested characters cannot be detected,
recorded, or affected by technological devices. Likewise, manifesting
beings are still subject to astral attacks.
to cast this spell and have it affect anyone you need to cast it in meat shoes and this are in the van, from where you have no line of sight. Change your IC to refelct you move out from the van and move toward the group (describe how) - the rolls hold. they will be used for the spell if you decide to move out.
I'll assume you do so in your turn unless, you manage to write something before that.
