I'd cut and solder, but that's me. It's your bike so you'll need to do what you feel comfortable doing.
As far as the ABS Warning, I'd say yes, you can ride, but you will not have ABS. Again, it will still be your choice to do so or not.
Now back to the sensors..... can you give us a better shot of what the pins look like? If so, we may be able to tell you how to remove them or someone may be able to make or get you the parts to make a short adapter harness.