harare zimbabwe president robert mugabe fire emmerson mnangagwa vice president monday show traits disloyalty information minister say abruptly remove favorite succeed 93-year-old leader mnangagwa removal provide boost mugabe wife grace vocal critic vice president also see potential successor husband vice president consistently persistently exhibit traits disloyalty disrespect deceitfulness unreliability information minister simon khaya moyo tell reporters become evident conduct discharge duties become inconsistent official responsibilities mnangagwa top aide christopher gwatidzo say see statement khaya moyo decline say whether vice president office monday grace 52 nickname gucci grace love shop call mnangagwa coup plotter coward sunday speech inflame already bad-tempered rift rule zanu-pf party follow speech mugabe rally saturday publicly rebuke deputy first time reaction military could key army general back mnangagwa succeed mugabe publicly say allow someone fight 1970s independence war rule grace fight war grace make international headline august south african model say zimbabwean first lady whip electric cable johannesburg hotel suite grace deny allegations fight future control zanu-pf overshadow economic crisis mark chronic shortages cash spiral price goods raise fear return hyperinflation mnangagwa mugabe protege side five decades prison guerrilla war post-liberation government question raise cause fallout two men fire mnangagwa mugabe remove one last remain liberation war comrades stand since independence britain 1980. however grace say sunday mnangagwa always plot husband even months independence mnangagwa big undo may well vocal supporters keep prod mugabe step mugabe history punish ambition zanu-pf relations also cool two men august suggestions mnangagwa ally poison ice cream dairy own mugabes mnangagwa expulsion announce government minister chief secretary president cabinet also speak deterioration relationship mugabe plan contest elections due next year likely face weaken fracture opposition main rival morgan tsvangirai south african hospital announce colon cancer 2016. zimbabwe 's mugabe sack vp see top succession candidate