CRM,
I wondered the same question.
Is it a wingover with upto 60 deg noseup and 60 deg bank? Is it a common term, common exercise?
I routinely instruct wingovers and one important lesson always to pass along is the ability to complete a wingover with zero sum heightloss. Whatever amsl you start at, level out no lower. If your technique always loses 50' or more, then one day ......