He recognizes explicitly that he restarts his node before the end-of-leasing block 278461, and he restarts it to a time after the beginning of leasing, with a copy made after he started to forge with leased balance. That is an intentional act, or better said, two intentional acts.

The non intentional act is to let the node evolve by itself without reseting. Or at least, to reset his node to scratch, deleting his blockchain file in order to reconstruct a clean blockchain from the network. But reseting to a state between the 1440 blocks of his leased forging power is an intentional act.