I assume you tried clicking various places inside the room as well was clicking and holding the mouse button down to direct the character?
Can you click on something in the room, or toss something in to click on?
I don't recall if there is a door, but if so, try clicking on it to close it, then open it and try again.
If you hold the alt key down, or just move your mouse slowly between your character and Verant, is there anything you can grab and move out of the way (furniture, etc).
You could leave this until you get the second teleporter stone, and try to get in that way.