Ah, yes... "A" stands for Azrak.
The evidence sounds really flimsy to me. You should need a little more than that to go on to discredit Lawrence.
I have been reading "Backing Into The Limelight".....it is an amazing biography and it would not surprise me in the least if T.E. made up the rape. He was known to fabricate things for his own amusement.
And it clearly means, "I'm still in Azrak"
Definitely NOT, "Thank Allah, I'm not still in that dump, Azrak"