Oven Isolation and heating element?

Ok i have a belling xou178 single electric oven. I have a switch on the wall for the oven which cuts the power to the oven. The heating element has gone, the grill and fan still work as does the oven light, however, no heat with the fan oven on only. I clicked the oven switch to off and i took the back plate off and saw a cracked element on the surface. It appears that the element is screwed in from the rear so i took the fixing screws out and pulled the oven out. Before i go any further am i right in assuming that by switching the switch on the wall near the oven off that no electricity is now passing through the wires so i can safely disconnect the heating element without becoming a heating element for all that electricity myself