While Oka doesn't write the show, I'm pretty sure he had more that a little input on that line. From what I've read he was/is a "geek" IRL and has added details about Hiro such as this, so it wouldn't surprise me if he pushed for this personally. For all we know, he might have wanted to put a CE nod, but couldn't for obvious reasons (too obscure for pop culture, possible lawsuit from SE, negative impact on the whole "don't ask, don't tell" underground situation). I'm just glad for the reference.
One thing did bother me about his pronunciation. In the episode, he clearly said the "L" sound. Now I am aware that the "l/r" situation is sometimes overstated, but given that Hiro grew up in Japan and presumably played the original version, wouldn't he have pronounced it more phonetically. I'm not sure if this is Oka's fault (since his Japanese can be "off" and Americanized at times) or if it's not a fault at all.