Here are a series of satellite images taken around the time of the breakout, with the path of the ITP superimposed on them.
2011-02-20 (a big storm makes lots of waves, you can see the road from McMurdo to Pegasus as a white line near the profiler, with a tongue of water crossing it...)
2011-02-22 (the ice edge moves towards the profiler)
2011-02-23 (moved, stuck by the ice shelf)
2011-02-25 (escapes from the ice shelf edge)
2011-03-03 (a few days later)