an administrator of an trust/estate spent all of the money, what remedies does PA law provide

What did the administrator spend the money on? Was it for estate debt? Was the administrator bonded? Did the administrator breach his trust? If so, laws of every state would provide remedies against him.

The Administrator can made to repay estate assets that the Administrator squandered or stole or caused to be damaged or diminished through neglect. If the assets were spent on appropriate estate expenses then the Administrator acted properly and would not have to repay the asssets.