Funnily enough, that's exactly what you're supposed to do in a Porsche (assuming it is a rear engine 911). Unlike most cars, 911s will understeer (or correct an oversteer) when you mash the throttle, and oversteer when you lift off the throttle. The reason they're called widowmakers is that the oversteer/understeer dynamics are the exact opposite from what you would expect. Think you're going too fast into that turn? If you slow down, you're dead, but if you speed up, you'll survive.
It's also why crazy adrenaline junkies love them so much...in some senses, they're actually safer when you push them hard than they are when you try to be careful.