Alex Boone on Harbaugh: He’s crazy, wore out his welcome

Alex Boone was one of the most vocal supporters of Jim Harbaugh before Harbaugh and the San Francisco 49ers decided to part ways. The offensive lineman said at the start of last season that everybody “loves” Harbaugh, and he seemed pretty genuine.

Now that Harbaugh has moved on to Ann Arbor, Boone feels more comfortable telling the truth about what was really going on inside the walls of Levi’s Stadium last year. During a chat with Andrea Kramer for the latest episode of HBO’s “Real Sports with Bryant Gumbel,” Boone admitted Harbaugh wore out his welcome.

“He does a great job of giving you that spark, that initial boom,” he said, per Mike Florio of Pro Football Talk. “But after a while, you…