Where are you getting that Pollard's leg is "wrecked" and it is a "freakish" injury?
It is a simple broken bone that will heal on its own and he had tightrope surgery to stabalize the ligament that was not even torn. Ryan Tannehill sprained his ankle in the game against the Chargers, went back into the game and played on it, and then got tightrope surgery the day after the game.
He is expected to be fully recovered , same as Pollard. The injury is fairly minor among pro athletes, nobody has had to retire or had their careers shortened from a tightrope surgery. For comparison purposes, an ACL like Gallup had is about 1000 times worse as far as injuries go because coming back from an ACL will make you a gimp for at least a year as we all saw with Gallup, conversely there should be little to no affect on Pollard's playing ability from tightrope surgery.
That is why there was no hesitation with tagging Pollard, people acting like Pollard's leg was amputated.