I visited Henry Brunton at his Academy at Strawberry Farms golf course and was able to get a quick drill he uses with his clients and then I went back into the gym and recorded some exercises that can help with the limitations associated with the reverse spine angle.
Do you have a swing fault you've been fighting for a while? It's probably a physical limitation if it's been longer that and couple months.
Let us know what it is in the comments section below and we can shoot a video to help!