You can get secondment from ur auditor as of now to work in deloitte or u have to wati till the existing transfer rule is changed(doubtful) or when u get ur first opportunity for transfer
no u cant take trnsfr, as of nw, d nly option avlbl is secondment, dont even think of goin 2 institute or write letters so dat they consider u as a special case. such a special case thing doesnt actually happen. i myself am a big victim of this foolish rule of institute, i suggest continue were u r presently, till sm miracle happens to remove this 25 mar rule.