Prof. Wrote LOR in like 10minutes

nanotechnology
Tue, 05 Nov 2013 05:40:42 +0000

I’d suspect that last comment is most likely. He had probably written at least most of it before, then thought he’d come back to it to check/mull it over before submitting. Once you sent the reminder, he probably just went ahead and put it in.
Just my guess, though.