I can confirm on a PvE server, that mobs from the Maelstorm can be dragged / pulled outside the yellow line area (map posted in this thread and damage a base. I ran back to my clan’s forward base not realizing a few mobs were still chasing me and they did a small bit of damage to my clan base before I killed them.
The base is inside the storm wind area but not where mods spawn (reddish clouds area) so I can only confirm that white clouds area those demons can be dragged purposely or accidentally into a base area and do damage. I have no idea if the base was farther back if it would do so or not. (I did not watch that video yet)