' s ▁knowledge , ▁and ▁was ▁later ▁used ▁to ▁threaten ▁Ba ek ▁when ▁she ▁attempted ▁to ▁change ▁her ▁contract ed ▁manager ▁at ▁the ▁peak ▁of ▁her ▁career . ▁The ▁former ▁manager , ▁who ▁fled ▁to ▁the ▁U . S ., ▁is ▁currently ▁serving ▁time ▁in ▁a ▁Los ▁Angeles ▁j ail ▁for ▁charges ▁of ▁sex ▁with ▁a ▁minor , ▁which ▁he ▁also ▁recorded ▁on ▁video . ▁The ▁sc andal ▁nearly ▁ru ined ▁Ba ek ' s ▁career , ▁leading ▁to ▁a ▁five - year ▁absence ▁from ▁the ▁lim el ight ▁from ▁which ▁she ▁only ▁emer ged ▁in ▁ 2 0 0 6 . ▁ ▁In ▁ 2 0 0 9 , ▁after ▁suffering ▁from ▁a ▁high ▁fe ver ▁and ▁d izz iness ▁from ▁the ▁flu ▁and ▁hyp ot ension , ▁Ba ek ▁stopped ▁a ▁dinner ▁concert ▁mid way . ▁After ▁singing ▁her ▁fifth ▁song , ▁she ▁told ▁the ▁audience , ▁" I ▁am ▁very ▁sorry ▁for ▁being ▁on ▁stage ▁despite ▁being ▁sick . ▁I ▁won ' t ▁be ▁able ▁to ▁continue ▁my ▁performance ." ▁Exper ts ▁spec ulated ▁that ▁ref und s ▁cost ▁Ba ek ▁and ▁her ▁ag ency ▁losses ▁of ▁nearly ▁. ▁ ▁She ▁and ▁friend , ▁singer ▁Y uri , ▁set ▁up ▁the ▁successful ▁online ▁sho pping ▁business ▁I am Y uri ▁Mall . ▁But ▁Ba ek ▁with d rew ▁from ▁associ ating ▁with ▁the ▁brand ▁in ▁ 2 0 1 2 , ▁after ▁the ▁Fair ▁Trade ▁Commission ▁f ined ▁several ▁celebr ity - run ▁online ▁sho pping ▁m alls ▁for ▁posting