Supercross Rider Mac Anstie was in The Freak Nation Sunday night as he recovered from a freak injury last November, a collapsed lung suffered without damage from a track accident. Doctors say the injury could have been the result of a prior injury. Anstie said he “was out riding and felt great. Didn’t crash, didn’t do anything. Got off the bike, no over jumping, no nothing, got off the bike, was talking to my team about the bike, about random stuff, and all the sudden I felt like I was getting stabbed in the chest and in my back.” Listen…