Krochus is spot on with this. The ABS is supposed to be a background system that only comes into play when you skid. It does what we used to be trained to do..."pump" the brakes. If it ain't working right, you are better off without it until you can get it fixed. Personally, I've never liked the system, because in certain situtations, it give less control. For the inexperienced driver...perhaps it does save lives.
When I pull a heavy trailer with my vehicle, the first thing I do is remove the fuse for ABS. I put it back when no trailer is there. On a wet road the surge brake on the trailer will cause it to help slow my truck...if I leave the ABS intact, it will go crazy and the trailer will jack knife.