Oh yeah, this has happened more times than I can remember, I think it's part of the "absent minded professor" archetype that so many of us manifest!!
Also part of the Aspergers inherent shortcoming in multi-processing; the ability to fairly smoothly integrate multiple streams of information. As a previous respondent to this post alluded to, it's not so much our inability to pick up on nonverbals; it's our inability to absorb both the verbal and non-verbal stream simultaneously (like many Aspies, if I focus only on nonverbals, I can get the person's mood and thoughts quite well).
It has been a source of embarrassment for me though. Often times, I will become "detail-biased" with a certain set of details, bring up the perceived problem to somebody else, then I will interrupt myself and say "oh, wait, nevermind...I just realized that not only are there factors A and B, there's also factors C and D. OK, so don't worry about it...it's resolved..."
It caused issues at work too - in a past job, one manager who wouldn't hesitate to point out my flaws told others in a meeting (which I heard about second hand), "I can't help but worry that when Jayo is assigned to any given project, he will miss or overlook things that should be obvious because he's so focused on what he prefers to focus on..." - something along those lines.