I made from some pieces of wood a press with a threaded rod so i could press the fork out..
Piece of wood on top of the fork, the rod through it, under the frame and above the shoulders of the fork an other piece of wood and the press it out....
I used the same wood to press it in again, be sure to take some hard kind of wood.... If you're familiar with welding you can put some pieces of iron together to make a press.
That's a nasty crack in the frame :?