As a fan, it sucks to see the team you root for losing games but it is ten times harder because the coach refuse to see the obvious.
And remember sooner this season the reason given by Pop for not giving minutes to Tiago: "it isn't fair to the team". Basically he didn't want to develop Tiago because it would hurt Spurs record. What "isn't fair to the team", is to continue giving major minutes to Bonner while he is in a huge shooting slump. Bonner isn't the only reason why Spurs have lost 6 in a row but he is a big one.
Pop is damn stubborn. He decided that it wasn't a year for Splitter and that Bonner was a major piece of the team. It's time for him to look at the facts, admit he was wrong and change his rotation.