This Mr. Murray, the mechanic, obviously has other problems with his money management if he is in so much trouble (2 suv payments perhaps?).
Assuming his wife doesn't work, his monthly gross is 7500. Even his new adjusted payment of 1800 is just 24% of his gross, below even the most conservative guidelines of 28%.
If those payments are 'killing him', then he needs to look at where the rest of his money is being squandered. Aside from the fact that it's an adjustable, this mortgage is not his problem.