yo, matt, that was a bit rough.
but keep in mind, even plecos have to decide on a pecking order.
and their armour makes it very hard to hurt anyone of their own species.
Some battle is normal, upto a certain point.
The nearly one foot plecos fought a tough battle, but the biggest won, and nowadays will "allow" the smaller one into his territory.
if you have enough room, to rehome, imo that's a safe bet.
on the other hand, usually the fighting stops after some time,and they will have decided who's boss.
i allways have one more cave then the number of plecos i have in a tank.
2 plecos means at least 3 caves.
Just beware, if they are sucking on and attacking eachothers bellies, their only weak spot, they should be seperated.
Did you plan on keeping them apart for good?