Just finished the RoW yesterday, its possible TOdium has adjusted more then this specific memory regarding their brief meeting. Other functions like hand/ eye coordination could have been accidently impacted, such as dropping the coin. Will be very interesting to see if Hoid has any other deficiencies (such as speech, limp etc) in book 5 and beyond. Could be the start of a motor neuron or Alzeimers like condition for a lead character from TOdiums meddling.
Also asks the question if TOdium has now found a way to use Hoid as a pawn in his plans! Hoid can move anywhere in the Cosmere, if TOdium can direct Hoid around the cosmere, it could be more powerful than having Dalinar as his minion!! Implications could be seismic