Ok, am i being an idiot or what?
Wordpress admin -> Abundance -> Theme options -> Footer -> "Logo Footer" area
I uploaded a test image to see placement, have a look at css etc.
Ok, now I go to upload a single wide image with brand images. Image appears in addition to original image. No worries, I'll just delete the first one... hold on, how do I delete this thing, seems to be permanently engrained!
Hmm, ok, I'll just reset settings for the footer, click, oh... that seems to have returned ALL Abundance settings to default and deleted the custom css I've been working on... bugger...
Oh wait, it's deleted everything except the footer image, that little bugger is still there!?
Any ideas? Thanks! :)