I wonder it they sent a text to their buddies that ended in "hahahah" after they placed the sell order.
Related to RBS and Libor-Fixing:
“Nice Libor,” Tan said in an April 2, 2008, instant message with traders including Neil Danziger, who also was fired by RBS, and David Pieri. “Our six-month fixing moved the entire fixing, hahahah.”
Bloomberg has much more on this new development.