He claims that he recovered it as per this thread:
https://bitcointalk.org/index.php?topic=2222494.msg23555770#msg23555770
However, given the following:
The account is Hero registered in 2013 and early post show the original owner was mining and obviously was knowledgeable.
I do not believe him. So either:
1) Someone managed to hijack the account via recovery.
2) The account was sold earlier.