In reply to gazj1986:
I soloed this on Saturday afternoon; it's dringo bendigedig (wonderful climbing).
From the belay ledge (top of P1), I stepped (climber's) right to the cracked wall. At about 2.5m, I moved left to pick up the flake/crack, and then followed the left-hand side of the slab to the belay at P3. I think this is probably the route that you took.
However, you can go straight up to the flake from the belay or step left as per the guide; both are probably a bit easier climbing in that they're less exposed/steep.
As for the "true line", I'm not sure that it really matters as it's P3 that's the true gem.n