Why should you be amazed? Willard didn't change his position on abortion gradually over 5 or 13 years - He changed it abruptly around the middle of 2005, i.e. less than 3 years ago. He appears to have did an abrupt about-face on the issue at right about the time he started thinking about running for President as a Republican, and realised that being radically pro-choice was going to be a no-go in the Republican primaries. Hence, he's a flip-flop - he adopted political positions based on convenience, not on principle.
huh? Show me were he said what 6 or 3 month ago that is the same as what he said 13 or 5 years ago
Did he change his mind from one one week to the next and back again? No