(assume) 9 handed PLO, any hand dealt out to river=41 of 52 cards dealt.
chances of 2 Q
's being in deck and dealt out earlier/later and never noticed by another player are so low, think about it. especially the chance that this apparently was even never discovered on a later hand, only by a picture taken on an incredible bustout.
of course it's possible but so highly unlikely this was never noticed on this hand, any previous hand, or any later hand..........