Here's the thing, no one on here knows if its altered or not. Those saying that everyone was swinging it is proof that its altered are wrong. I've seen teams with a shaved bat that only one person swings, I've seen rec teams all swinging the same Easton Hammer. There are tons of reasons why people swing a given bat, none of it is proof if the bat is altered or not altered. I will say the og aftermath isn't known for its durability, I broke one in under 500 swings. If this bat is dirty and the whole team is swinging it and hitting bombs that thing won't last a season, it may not even last a full game.
What can be done (we teach our umpires this technique) is to have the umpire remove the bat from the game because in his judgement the bat is unsafe. You're not accusing anyone of cheating you're simply removing equipment you feel is unsafe.
The umpire taking the bat out of play for safety reasons is a cop out and a terrible idea that just sets up for more issues. What happens when OPs team hits a couple balls hard with one of their bats and the other teams expects you to even up the situation and take their bat out of play. What happens when the same batter comes up next at bat and hits a ball just as hard with a different bat are we going to just keep bats out of play for being unsafe because someone who can mash is swinging them? Umpires have enough unpopular judgement call to make, asking them to determine based on hard hit balls which bat hits "to hard" is setting them up for failure. It doesn't take a genius to realize that its the roundabout way to accuse someone of swinging dirty, plus you piss off players who paid good money for a bat based 100% on a split second judgment or you encourage players to whine about the other teams bats to get their bats labeled unsafe and removed. What happens the next week or the next time the two teams play and there is a different ump but the guy is legally swinging his bat again. Now we have people getting pissy because the bat was unsafe last week and now the new ump is saying its not, who is wrong is it this weeks ump or last weeks? This is one of the worst ideas for dealing with altered bats I have heard, you either need to get a bat tester or other way of standardizing which bats are allowed or just allow all legally stamped bats.