By Charlotte Tutton Celebrity Big Brother star Sharon Osbourne backed her pal Louis Walsh amid him facing eviction on Tuesday night. The star left the show on Tuesday night live on air, before sitting down with hosts Will Best and AJ Odudu for her exit interview. Sharon was only ever meant to be on the show temporarily as a lodger, and was not ever going to be evicted. There was some confusion over her stint on the series, as it had been reported she would be in the house for a few days, only for her to stay for half of the series. As Sharon shared her thoughts on her housemates on Tuesday nig…