To find the phrase "As you were" odd...

[LaMarschallin]

...when its stuck at the bottom of a post?
It seems to me as if it's a bit of a put-down but I don't really know why it feels like that.

Perhaps because it's used by superior officers in the army to allow their juniors to return to "at ease"?

I suppose it's one of those things that's easy to trot out like ODFOD.

IABU to find it pointless, aren't I?

Don't think I've copped it in that way. I'd use it if I was saying something and then realised it was daft/pointless. It's a 'please pretend this didn't happen', than a 'you are dismissed'.

I'm with RedForShort, I'd say it if I realised I'd interrupted with a tangent or slightly irrelevant comment. Like, don't mind me, pretend I'm not here sort of thing.

Right!

A bit like I might say "I'll get my coat" or something?

It can would see it would make sense if somebody had said something daft or pointless.

It’s origins are military. Troops leaping to attention when a senior officer unexpectedly hoves into view during a time of relaxation are told to be “as you were”. As in, relax, nothing to get excited about

Like the others, I take it as ‘I’ve realised that I have said something that has added nothing to proceedings, please ignore me and carry on’