What is the deal with Brunskill? The Broncos are banged up. Star cornerback Pat Surtain practiced for the first time Thursday as he’s dealing with a shoulder injury, but Surtain was limited. Likewise, wide receiver Jerry Jeudy hasn’t practiced this week with a rib injury. Those are two of the more important players on Denver’s roster and two players who wouldn’t certainly be a thorn in the 49ers’ side. The Broncos are already without safety Justin Simmons, who is out with a quad injury. That leaves Denver susceptible in the secondary. In addition, this is a team that struggles against…