I am SO sorry! Grrrr! I agree with the poster above, I would get a really sharp (and heavy) pair of scissors and cut off the leather above the damage, at the same angle as the edge is now. I might even try the "cut" a few times across the damaged part to be sure I got a clean, sharp edge and the right angle. So sorry this happened to your beautiful bag!
Edited to add ... if I weren't a crafty person already

and thought that might bug me (chopping it off!) I would contact
coach about a repair and pay for that. It might bother me every time I used the bag to not have the pulls like they were supposed to be!