Water Heater drain plug head broke off..Remove Advice

I'm not sure if a drill bit will work since the bit has to rotate clockwise to bite into the material but the plug has to come out counter-clockwise. I used a hacksaw blade to carefully cut through it, front to back, in a couple of places then used needle nosed pliers to pull out the pieces. Another way would be to use this, which can be found at Ace, Home Depot, etc.