<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">You are really asking "Why does anyone do anything b'dieved?"<br><br>Perhaps he was sitting and counted the omer, and only during counting<br>realized. (I've done this with Aleinu; I was already sitting for, say,<br>tachanun, and I went straight into Aleinu. It can happen if you aren't<br>with a minyan.) Or perhaps he realized during the day (say, while<br>reading the newspaper) that he didn't count the previous night, and he<br>immediately and spontaneously counted, without standing up first.<div><br></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">Your reasoning sounds good except with sefira, you're </span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">talking about a special part of the service that stands</span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">out. If it is during the day, your explanation holds more; </span></font></div><div><font class="Apple-style-span" size="5"><span class="Apple-style-span" style="font-size: 18px;">however, I don't feel that is true for ma'ariv. </span></font></div></body></html>