Fat only burns in muscle tissue... whether he likes it or not, he had to gain muscle.
Good job ~
My formerly obese client, 5'8" just under 300 lbs. ~ now a Paramedic and of course 100% natural:
High Intensity workouts for the most part.
Eccentric/Negatives prioritized often
Short rest periods/ fast paced
Taught to eat like a Type 1 Diabetic (who follows Dietetic Protocol)
"0" Cardio
He was going to work at 4 pm and returning home at 4 am, also interning, coming to his training sessions at 12:30
Also quit smoking ~

I hope some other trainers will post up some of their best clients (not the "hot" clients, that thread would be too long) ~ post up the ones that work so hard and sacrifice everything to get in shape. These people are rare in the overall scheme of things ~