A drug problem exists, a thorough testing program would help to alleviate the problem... Having the system, and thus the culture in place would have kept UND from losing the talents of these two players. If they chose not to attend UND due to strict drug policy then the team would have dodged a bullet... Try to consider the time and expense that went into recruiting, training, housing, and educating these individuals. Money would be better spent on individuals that are not will to piss it down their leg so readily..
As far as dealing vs. use... both are illegal and against school policy. If you are a high end athlete you would not want to be anywhere near any of it. Law enforcement is notorious to throw the book at persons to get pressure on the person to get individual to plead out. I have a digital scale on my kitchen counter. Doubt I have any baggies that contain residue but I watched an old guy pick up a baggie by a port a john once and threw it in the garbage, I wondered later what was in the baggie, cause it didn't look like a wind blown bag. He may have not had a clue, or dealt with the issue without making waves.
My personal opinion is if it could be legally controlled like alcohol, then legalize it. If anyone wants to use in moderation, adults of course, then it is just dangerous but not much more dangerous than alcohol.. If I have a "job", which those athletes do, that had rules regarding use, then I would need to follow them.
I don't know if the drug issue is a major problem with the team. Saying that "other teams do it" is a giant cop out that should not be embraced.