I wasn't talking about all out failure. Obviously if the pump stopped, it'd grenade the motor. However, often oil injected bikes experiences minor fluctuations in the mixture from blockages in the oil injection circuit that sometimes will lean out the oil ratio. My old RZ 350 did this a few times, and I went thu the system and replaced the oil jet orfice and associated tubing. It was full of globs of crap that were obviously impeding oil flow.
I was merely saying that a little oil in the fuel tank (way less than the appropiate full on mixture ratio) can often take care of the situation should your bike have an oil circuit lean moment.
Unless I was racing on a circuit, I would never remove the oil injection from a bike unless it failed. Even if it failed, a rebuild is cheap and easy.