Почему Иэн Гиллан был уволен из Deep Purple в 1989 году?

Roger Glover
(Finish magazine "Rumba", No 12.1993)

       "Ritchie announced, once again, that he's unable to listen the voice of Gillan. He said that Gillan has to leave the band. This time we others agreed with Ritchie; Gillan didn't sing very good those days and also he made poor lyrics, neither he had much respect for other person's doings. The decision was difficult and unpleasant, but it has to be done, so we fired Gillan."