You can use Interact with Mouse over to hit the nodes.
if using isboxer, you can sync cursor and push IWM like you would normally do IWT.
Or use broadcast.

Edit: Just noticed your Autohotkey comment - I'm not familiar enough with that to help >.<

You'll then run in to the problem of "Item is Busy"
If using Jamba, you can activate the 3 check boxes under Team > Advanced loot
With out it, you'll need to go to each window to collect the loot.
or use a LootSlot(#) macro with out the CloseLoot() part.