I thought this might constitute a spoiler under the Angel Beats! rule and that I should confirm it first. For whatever it's worth in regards to K-On's non-plot intensive plot, anyway.
It's not like it was ever doubted that Okuda had a name, it's not some alias, and nothing is dependent on or plot relevant to this bit of information other than as a joke for this chapter. It's just confirmation of her full name.
Updated by jxh2154