I think O1 makes a decent blade. Adding extra vanadium could vary the heat treat anywhere from not much at all, to quite a bit. Can you make a decent knife from it? Sure. You can probably make a decent blade just by getting it non magnetic for a bit then quenching it in canola oil. But you aren’t going to make anything better than your heat treat, and without knowing anything specific and knowing how to use that information, you aren’t going to make the “best” blade out of it. Sounds like it may not have been well annealed when you were bending it. Or it could have been perfect. A nice pearlite annealed structure is rather brittle too. I’d say give it a shot, can’t do anything wrong if you do nothing at all, right? Lol