I can assure you that not rehiring vacancies isn't a guess on the future. The only thing that remains an issue here is when. And, although I don't think it will happen - the 'when' could apply to rehiring and bolstering the sales force. At the end of the day, however, something needs to happen. Status quo won't cut it.
With approximately 35 vacancies currently, I would estimate that there will be anywhere between 10 and 20 new resignations during the month of January. If that happens, the sales force will be at 2/3 strength.
It's like Respi has 1/2 bottle of oxygen remaining and is still 2,000 feet from reaching the summit of Mt. Everest - and the clock just struck noon. Do the math.