A referee admitting he made mistakes after the fact is a whole other animal than admitting he was...what were your words..."in the tank"?
That might be sour grapes.
As for bad calls, they happen and the Steelers have been victim to them as much as any other team, including touchdowns being called back, not to mention the grandaddy of all bad calls...the infamous coin flip.
In the end they shake out in the wash. There is no conspiracy against your team.

