I don't blame Howse for walking away from hockey, but I kind of agree with Tfong here. Ferland and Howse were two guys in almost indentical situations and went in completely opposite directions.
Howse went on a conditioning stint for a month, met with nutritionists, trained and lost weight, but the results never translated. Ferland this past offseason, made a commitment to hockey and really committed to it, and the difference is night and day. I think the difference between the two is one had serious motivation and commitment to do anything it takes to be a professional hockey player, and the other did not. I've seen players with lesser skill sets make it than Howse, but at that stage it is mental and that is where Howse is lacking.
Regardless, it is obvious he does have the passion and fire to play, so best of luck to him in finding a passion in life.