Brown’s workout clause was a throw-in for his $2 million escalator

49ers coach Jim Harbaugh has said that he hopes the matter of cornerback Tarell Brown’s squandered $2 million escalator eventually will resolve itself in a way that allows everyone to laugh about it. For now, the Niners may be laughing nervously.  (Or possibly in sinister fashion, with a “mwu” preceding the “hahaha.”) Lost in the…