Assuming that the effective date is indeed 12/19/2012 and not 1/1/2012 and a calendar year, there is a far larger problem looming: 415 limit. An effective date of 12/19/2012 and year end of 12/31/2012 gives a 13 day year, so you're operating with a dollar limit of $50,000 * 13 / 366 = $1,766. Oops.
You have (almost) answered your own question. Distributions from a qualified plan are not subject to FICA. But, since you expressed some doubt, it would be prudent to make sure your plan really is qualified (which is more - much more - than just asking the "salesperson"). Got an accountant? an attorney?