Yes I would not use it until repaired.
i have often wondered about those mast deflectors. Are they magnifying the point loads at the mast track??

That looks like the board is cracked... You might want to have a look under the the foam on the nose. Good chance there is a crack as well. One of the reasons I am reluctant to put any kind of padding on the nose. You won't see if there is damage.

Also one of the drawback of having a longer and wide nose is that you get very little deflection to the side.

I've catapulted quite a few times in the beginning from over foiling. I'm doing much better not over foiling and haven't over foiled, resulting in a catapult for several sessions now. But the noodle idea is cheap and works great. Looks a little funny with the noodle, but you get used to the noodly look. Absolutely zero scratches and zero damage to board from hard catapults. Noodle and straps are holding up great. I take the noodle off after every sail to dry and strap the noodle back on at the beach before sailing. Here is a new pic I just took of the Velcro straps fed into a bowline knot that I JB welded too the board. It takes like 1 minutes to strap the noodle on the board.

It is a bit hard to see on the photo, but looks like the damage is just behind the mast foot:



If this is correct the damage is not an effect of the Surfbent or damage on the nose from catapults.
If the Surfbent would have caused this the damage should be forward of the mast track, and most likely on the front side of the board.
Forces work between forward bumper on the Surbent and the screw of the mast base.

However this is one of the area's of the board where the most forces are located during foiling (between front straps and mast base), also this area takes a beating if you lose lift and slam down into the water. This effect is worse when you have a foamy nose protector (or pool noodle) that prevents the nose from sliding in through the water.

If I'm correct this is structural failure in an area that should be designed to handle such forces.
I am very curious what the verdict of Starboard will be!