Lewandowski SAID to Hannity on Hannity's show on Thursday 4/14/16: "You know, when I walked by Michelle Fields that night, I said, Excuse me, thank you, because I was trying to walk between her and Mr. Trump".
That was yesterday. Do you have any evidence that he remembered the incident contemporaneously with the statement you have labeled a lie? For the original statement to be a lie, it must have been known to Lewandowski that it was false at the time of the statement.
Honestly, I do not believe that Trump and his campaign handled this incident well, but I also recognize that it was (and is) a damned-if-you-do-and-damned-if-you-don’t scenario.
Fields very clearly exaggerated heavily (at the best) in her recounting the incident, judging from the actual videos I have seen. Lewandowski may have exaggerated, and may even have lied, but it is not difficult to understand how his response to being accused of all but throwing her to the floor is reasonable.