Taking a look on the graphs, no, they're still using the old route.
The Campus-graph is more or less "flatlined" at 80 Mbits outgoing. Incoming on the other hand is now at 28. This is nearly halved since last week.
Another very interesting graph is the res-hall-graph, that dropped slowly from 40 Mbits to nearly 0 on Sunday.
So the extra bandwith is due to the fact that most of the normal users has left.