Roseanne Barr’s ex-husband Tom Arnold says she purposely sabotaged her revival show on ABC. Arnold adds Barr would never say controversial things on TV, but is a loose cannon on Twitter. Talking with THR, Arnold says he tried to give advice to Barr some time ago on how to avoid controversy. He goes on to say ABC should have acted as a ‘shield’ to keep Barr from saying racist remarks online.