That's definately a hinge, but I think it looks worse than it is because that section of the limb is straight when unbraced.
Ok so if you want the tough constructive criticism, here's where I think you can improve on the next one:
Tiller slowly, because you can't go back and put wood back on.
You can narrow that handle a lot to get closer to center shot, it'll make the bow shoot a lot more forgivingly.
You can also narrow those tips more. They look like they're 1/2"+, I would say with Ipe, you really wanna be under 1/2" wide on the tips.
If you set up your form so the reflex in the limb is nice and smooth and even along the length of the limb, it makes it easier to tell when the tiller is spot on.
Overall though, pretty nice bow. Since its Ipe, and not terribly high draw weight I wouldn't worry about the "hinge" and again, I think it looks a lot worse than it is because of the limb profile being flat in that section vs very reflexed at midlimb, it's probably bending about the same as the rest of the limb. You can see in the full draw, the hinge doesn't look worse than when braced, and if it was really bending too much there, it would look worse the more the bow is drawn.