[quote=@Dynamo Frokane]
<Snipped quote by CloudyBlueDay>

Ahh my mistake, I'm not sure how to get around this, I thought that Ditch actually went inside the wall with Walker, I wasn't sure how Rose followed them in without phasing powers. I can edit in that Graffiti cant 'see' Ecto and 'why she's worried for his safety.


[/quote]

No, Ditch did go inside the wall with Walker. He pulled her in with him, it's an extension of his power. Everyone rushed inside the building they tumbled into through the door.