I thought the same and then I remembered that grief is a process and it's okay to change something easy-breezy (like a screen name), particularly when the repercussions of a simple change are almost nil and aren't likely to hurt anyone (Fru included). Who knows, maybe he's been thinking of a switch for a long time now. [sorry to discuss you in the third person, Frukathka]
I know I personally have considered asking my screen name to be shortened from its present length down to CB. Or switching it to something else altogether.