In reply to TomWeeks:
You could just ab down after your partner with him ready to pull on the hanging rope if you lose control to immediately lock your device. I've seen guides use this method, and they may ab first to sort the rope out with their clients "stacked" at the top with their belay plates correctly threaded on the rope. Yet again he could protect you from the top with the climbing rope which will have to be uncoiled at the bottom anyway.
The last time I had a problem abseiling was when I was hanging in space and the prusik backup jammed solid on the manufacturer's middle marker tape in the rope. In some situations it might not be a good idea for a beginner to use this method as they would not be able to safely sort out getting their weight off the prusik to free it.
Incidentally there is an easy, though initially exposed, scramble to the start of Second Corner going behind the pedestal and slithering down the safe crack to the ledge.
Although abseiling requires great care, as we rely totally on our use of equipment, in fact often everything is under our control and we are often not putting great strain on the gear. In actual climbing we use gear for protection which is not called into use unless a leader fall occurs when the forces are greater and less predictable.