Now he says he was embarassed by "a good con" and wants to put the record straight.
He said: "Some sob story about somebody needing to call their mother and could they use my phone.
"It was such a good con that I actually dialled the number myself and, when somebody answered, I then finally handed (over) my phone. And this kid took off and I was so upset I ran after him.
"I tripped up over my dog, and I ended up falling on to the street and hitting myself in the head.
"And now I'm bleeding relatively profusely, I'm extremely upset, I feel like the biggest fool that has ever lived. I march over to the police station and I say I got mugged.
"I woke up after a couple of hours' sleep and I thought you know there is a difference between assault and theft and it just wasn't on for me to not come clean about my own level of embarrassment and being humble at the fact that I got taken by the oldest con going."
He said he just wanted to apologise to the police and anyone who thought it was true.
Mr Spacey was asked what he was doing in the park at 4am. He said: "My doggy had to go!
More like he was trying to give a dog a bone.