The electrical substation injury theory surrounding the 49ers no longer has a pulse. San Francisco general manager John Lynch told reporters at the annual NFL league meeting in Phoenix on Sunday that the team brought in an expert this offseason and he found the Niners are not seeing an uptick in injuries due to a structure near their Santa Clara, Calif. practice facility . “We did hire an independent scientist,” Lynch said . “It basically was a big nothing burger. We’re safe. We’re in a safe