The plan's written document allows in-service at NRA for ALL accounts, and NRA is 55? If so, does that plan have an IRS D letter, an advisory letter, or an opinion letter?
I would think the plan, assuming it's a tax-qualified plan, would also have language stating something like, "regardless of anything you might have seen written in this here plan elsewhere, there ain't no way any participant is gettin' an in-service distribution before age 59.5 from them elective deferrals, safe harbor, QNECS, or QMACs, unless the distribution is for hardship or disability, or if its a qualified reservist distribution of elective deferrals." Probably not worded exactly like that, but you get the idea.