No, as part of the unit is in the front of the unit that is to be charged. The fact that part of the unit is then in the flank is over ridden by the fact that one of the baes is in the fron of the unit. (Think lines going out vertically from the side of the unit to be charged.
I think that if the chraging unit was further over and not in the front of the unit it wants to charge it would still have to be in the front, because charges are declared before any movement is made and so you can only declare a valid charge i.e. to the front at that point in time. When you subsequently make your drilled move you have already declared where you charging.