Well, the question assumes that Oracle would have donated OpenOffice to Outercurve... I think it's kind of obvious that Oracle wanted it to go to the ASF and that other options weren't on the table. Now this could be implied as a Good Thing (a sort of olive branch towards Apache after the Java fiasco), or a Bad Thing (let those SOBs at Apache take all the heat), depending on one's world-view and mindset.
IMO, the "community" is much larger than "just" the LibreOffice community or the old OpenOffice community. The various versions and offshoots of OpenOffice are all part of this larger community, and so the question also assumes that "the community" is just LibreOffice itself, which I disagree with.
In all cases, IMO Outercurve would have handled it similarly to the way the ASF did: accept the code donation and welcome any and all comers with open arms. What would have happened after *that* is anyone's guess.