That is likely the explanation then. REW rabbits tend to have vision issues due to the albino gene. It's not uncommon to see them sitting there swaying their head back and forth, scanning to try and get a better look at things because of their vision difficulties. If this rabbit has the common vision impairment that many REW rabbits have, this can easily explain why he reacts aggressively to suddenly having someone's hand enter his space.
Info towards bottom of page on REW rabbits vision and scanning.
http://www.vgr1.com/vision/
I would try the verbal approach first. Talking before getting too close to the rabbit, so he becomes aware that someone is around, before trying to reach out. But some REW have hearing issues as well, so creating sound vibration or waving a hand near to catch the rabbits attention is what I would try next if talking before approaching doesn't work.
I had a REW lop rabbit, and she had vision and hearing issues. I would try and get her attention before getting a hand close to her, but often she would initially lunge at my hand but stop once she realized it was me or her bun companion. It wasn't too big of an issue and is just something I dealt with, but she never got to the point of biting or I might have done it differently.