How? By tying down a few Turks in the middle of nowhere?
The Ottoman Empire was defeated the old-fashioned way: by hard-fought campaigns in the Caucasus, Mesopotamia and Palestine. Moreover, the Turkish Army was simply unprepared for a serious war (for example, see Edward Erikson's "Ordered to Die: A History of the Ottoman Army in the First World War", which is probably the best English account of the Ottoman Army in World War One). Lawrence only merits a single reference in the book, so trivial was the Arab revolt.
Lawrence was definitley a remarkable guy, but "Pillars of Wisdom" is a blatant bit of self-promotion. It should not be taken as an objective evaluation.
He also planted the seeds of Arab nationalism.