Potentially. Again, I am going to recommend legal counsel. There are a number of issues here. But speaking generally, if the PA made an incorrect distribution, giving a beneficiary's money to the wrong party, then there is likely a fiduciary breach. Assuming there is a realistic belief that the PA could be liable for a breach, the PA can make the plan whole with a restorative contribution which can be used to pay the correct beneficiary.
Separately, recovering the excess distribution from the other beneficiary can be pursued.
This is not legal advice. The fact pattern here is interesting, but there is a lot of missing information that could reflect responsibility and/or liability by a number of parties for a number of reasons - or even that no one is due anything. To steal the line of a frequent poster here: free advice is worth what you pay for it. Unless this issue is over a trivial amount, I strongly recommend the plan consult with an ERISA attorney.