Moving tanks or any changes in their environment can be very stressful for them. Unfortunately, when pacmans get stressed then often stop eating and it is very difficult to get them to start again. Keep his temps up and steady (fluctuating temps are stressful too). Monitor him closely, but try not to handle him more than necessary or disturb him. You want to keep the stress level as low as possible. If you haven't already, cover three sides of the tank with some sort of background to reduce visual stress. At this point it is very unlikely that he will eat without help. You need to force feed!

Looking back through this thread, I see that you said you dust with calcium once a week...? Calcium should be used every other feeding. The multivitamin is used once a week, but never in the same feeding as the calcium because when used simultaneously the frog's body will not absorb either as well. Not getting enough calcium may have worsened the existing genetic problems (with his lip and spin). I am not qualified to tell if the damage is permanent or not. I have seen pacs with pretty bad MBD (Metabolic Bone Disease) reverse some of the effects (such as lip deformities) through proper diet and supplements. If vet treatment is not available, you still need to get food into him. Again, I am not an expert so I can't diagnose his spinal problem, but he is starving to death. I understand that you are not their to personally do it, but he needs nutrients immediately! The longer you wait, the lower his chances of survival.