I personally don't think any organization should be responsible for helping an employee kick their drug habit unless drugs were an official capacity of the team as in pain killers
Difference of opinion on that and I would agree that in business it is not their responsibility, but we still see a number of businesses (particularly at the highest levels) that will hold positions for employees while they get help for one thing or another and lets not pretend NFL players are typical employees, they are multimillionaires, many of whom had or have very little guidance and come from backgrounds that may or may not have condone such behavior...players are also investments and sometimes you have to try to protect those investments.
I'm not condoning drug use at all, but moving on from a guy when a different solution could save his career or even his life (in extreme circumstances) then why not go that route...or at least give it a try?