I did some checking on my own and have heard that due to orders that came in late last year and the demands on suppliers, the time was needed to let them (the suppliers) get needed parts in the loop. Take that for what it is worth.
I'm sure that is one piece of it. Another likely possibility with ramping up production and overtime in December was to meet revenue targets. Production builds up to Q4, and if you're filling all of your orders then, what is there to do in Q1, but let the backlog fill back up. Except the 2013 industry backlog is not nearly where it was a year ago at this time.
Was told this was planned back in December or so. My supervisor's wife works there they were told they could have all the overtime they wanted the last 2 months then plan on a break in February. So I don't think anything is implied by it. You dont go from all the OT you want to shut down for no reason.