I don't think this move was made with this year in mind. I think it's a chance to add 25 year old big to next years mix after(determining Sanders didn't have what they were looking for) at a time where other teams rosters were full. Had they waited till the summer, when teams had many more available roster spots, there could have been more competition for a young big who had a very good D League run this year.
I think the only moves that were done in season this year that the team had any expectations of being for the playoffs were Korver, Deron, and Bogut.
The rotation was always going to shrink to 8-9 guys come the playoffs.