but it doesn't exactly suggest that he wants to change does it?
thats the problem with rehab- its fine if you want to genuinely change, but with someone like gazza, it's more about making a gesture than anything else.
Oh for heaven's sake, you'd think Gascoigne was the only alcoholic who behaves like this! Seriously. Having a last drink/taking one last hit is almost a ritual for people going into rehab. Courage, fear of what's next, clinging on to their 'comfort blanket'. He's an addict, he's weak, he's terrified of failing again, and probably also terrified of a future without the one thing that helps him cope. That's what rehab is for, to change that mindset and help him see that a life without booze is a possibility.
I hope this isn't going to be another one of those 2-week celebrity 'rehabs' though. What he needs is intensive structured rehab for a minimum of 3 months and then see where he's at. Anyway, best of luck to him.