Blondie - I'm not sure that it's "bloke speak" as such. The phrase is one of the most common to be mentioned on the Relationship board, both from a woman's and a man's perspective.
I suppose it can mean whatever he wants it to mean. It can be "it's over but I still love you" or it can mean "things have gone a bit stale but I still love you". If he would like things to be back as they were (as you mention), then it would suggest he'd like to fix things.
I'm not sure anyone here will be able to get into your DH's head. I would ask him directly "What do you mean? Are we finished or do you want to sort things out?" The thing to remember is that he's made the statement, so he needs to engage, explain himself and tell you what he means and then botrh of you actively take part in fixing things - if that's what you both want of course.
Whatever you do, don't fall into the trap of chasing him. Try and stay as calm as you can, do your bit to engage but make it very clear that he needs to explain what is making him unhappy.
Not sure if you have children and how far down the line you are with your marriage, but it's just so easy for things to go stale. It's always worth making the effort to keep things fresh.
Keep posting if you want more help. Good luck :)