Enforcement Directorate chief SK Mishra has got some reprieve from the Supreme Court, which said he can stay on till September 15, instead of the earlier deadline of July 31. The order came on Centre's appeal for an extension of the deadline till October 15. The court -- which earlier held a second and a third extension as "illegal" -- relented marginally today after the Centre argued about "unusual circumstances" and underscored a need for continuity.