Innovative yes and no
I will say this is somewhat innovative yet I have seen the various stick figure action fights and light saber battles. Let us not forget Animator verses animation which this clearly inverts the inspiration. Instead the animator is the one who has to fight for his life.
I like this piece but I will not say its the first of its kind. The twilight zone with a character with my namesake "Anthony" destroys his sister by throwing her into the TV. As for a flash styled yes it is new.
You managed a nice short but sadly this could become more. Try not to make things happen too quickly.
Lastly, I can tell this took as long as you said it did and you definitely have something to be proud of. You have talent and I am glad you are exploiting it on Newgrounds.