The truth of the matter, unfortunately is that they had no other choice than to leave. Not enough views, A&A not wanting to take unnecessary risks anymore.
Two weeks before we were told they were leaving, Lisa was still fighting to stay in VH and was trying to convince Grant to do things he didn't want to do. A few days before the announcement, Lisa who had not cried for months was crying heavily.
It seemed to me that Lisa wasn't really prepared to leave VH.
But people come and people go. That's life.