I don't think this is a special hybrid anymore, I think the bloom must have been affected by the weather because the second bloom on the same scape/stalk looks more like my other amaryllis bulb. Here's a picture of both of the open blooms (same scape/stalk):
(click on the image to see both clearer)
It's strange how the first one came out so variegated and how the second one came out looking like a registered cultivar, but so much smaller.