This is an exploit showing how a warrior can equip a 2handed weapon on his main hand while using a shield or whatever on your offhand WITHOUT TITANS GRIP.
First you have to spec 51 points into fury for Titans Grip then equip a 2h weapon in your main hand and nothing in your offhand. Now go respec, you should still have the 2h weapon equipped.
NOW YOU CAN SPEC ARMS OR PROT WHILE YOUR 2H WEP IS STILL IN YOUR MH (That means you can use a 2H sword with a shield in prot spec).
Have fun with uber 1h swings.