Was playing a game tonight and we were in a hallway, we open a door and there are 3 Enemy NPC's in the room. We had a very overactive tank who immediately said he was going to stand in the doorway and fight the enemies, basically acting as a meatshield, but our DM determined that this meant that all the Enemy NPC's in the room had 1/2 cover.
What can be done in a situation like this where we have a PC in the way of our attacks and refuses to move his character? Is there any action that our characters can take to forcefully/peacefully move him?
What about casting? I don't think I can cast exact target thought him without some penalty, correct?