Disabling ABS?

[RallyYaris]

Anybody know how to disable the ABS on the RS model? I'd like to do some Autocrossing and I'd need to disable ABS. Is there a simple method that won't void the warranty and is reversible?

[why?]

Pulling the fuse should work quite well. The owners manual should have a diagram of the fuse box to tell you what does what.