CONSOLIDATION THERAPY: Patients alternate courses between decitabine and OAG. Patients receive decitabine intravenously (IV) on days 1-5. Patients alternate with OAG courses, comprising cytarabine SC BID on days 1-7 and omacetaxine mepesuccinate SC BID on days 1-7. Treatment repeats every 28 days for up to 24 months in the absence of disease progression or unacceptable toxicity.