Before orcas were killing sevengills, guess which animal was slaughtering them? Yep. The super oily livers of these prehistoric looking sharks were used as attractants in the white shark cage dive industry. Fortunately, a collective agreement was reached to stop doing this and instead protect the sevengill.
If sevengills can survive humans they can survive a couple of orcas, but maybe not both. We might want to think about slowing down the relentless rape of the ocean by humans before talking about the potential removal of a couple of orcas.