Force-feeding should only be done as a last resort.

Did you made all the necessary changes that were suggested to you and that you seemed to be very reluctant to make in this post http://www.ball-pythons.net/forums/showthread.php?t=47186&page=1&pp=10

Did you switch him to a 6 quarts tub with 2 tight identical hides, water dish, UTH and thermostat?

Do you offer temps gradients of 80-84 on the cool side and 90-94 on the warm side?

Did you get a digital thermometer/hydrometer?