Robinson believed he was doing his all to try and keep Wanderers in the Premier League but was still frozen out.
He said: "It's been frustrating for me there. I felt like I was playing my best football and putting my body on the line for the club.
"But obviously they felt differently for different reasons. It's been very frustrating for me as a person and as a player.
"I'm just happy to be out of the place for a little while - just to get my head right."