Complex sentence: In 2005, once the station was in Equity's hands and back in shape, it changed calls again to WGMU to distinguish itself as a UPN station and to reflect the fact that it was no longer a WB affiliate.
Split into simpler sentences: In 2005, once the station was in Equity's hands and back in shape, it changed its call letters again to WGMU. This was done in order to distinguish itself as a UPN station and to reflect the fact that it was no longer a WB affiliate.