Did the NFL violate any law, suspending certain players that didn’t test positive for any prohibited medicine?

The National Football League sentenced to bans the linebacker D. J. Williams and Ryan McBean, a defensive lineman, of the team Denver Broncos for violation of steroid policy. These football players were suspended from six games. But they were not suspended for usage of steroids. They didn’t test positive for steroids or other prohibited medications. They were accused in providing “non-human” urine samples to the drug testing officer.
D. J. William confirmed that he had never tested for any banned preparation during eight years of his career. He noticed that he was proud of his records. The linebacker of the NFL mentioned that he was also proud of his manner in that he conducted himself, being a sportsman.
Peter Schaffer, the defensive attorney for McBean, claimed that the NFL had violated rights of this player. He noted that since McBean had never tested positive for any banned medicine, the NFL didn’t have any right to sentence him to suspension.
Peter Schaffer confirmed that he intended to make it clear that neither D. J. Williams, nor Ryan McBean tested positive for prohibited products.
A lawsuit was filed in Denver County Court against bans of these players of the NFL.
D. J. Williams and Ryan McBean affirmed that the drug testing officer had violated some rules related to the procedure of collecting urine samples.
Peter Schaffer mentioned that some similarities had been between his client and Ryan Braun. Braun won his appeal connected with his suspension from 50 games for application of testosterone. Ryan Braun could prove that Dino Laurenzi, the drug testing officer, violated steroid policy.
As for Laurenzi, he was defended and supported by different anti-doping agencies. The WADA also supported this drug testing officer. It was said that there was the same procedure of collecting and sending urine samples not only for the MLB but also for the WADA.
But as for the drug testing officer that collected samples of Williams and McBean, another attitude was displayed to him. He was fired by the NFL for incorrect doing his duty.
At the hearing the NFL administrators acknowledged that the drug testing officer violated the chain of custody for urine samples.
Nevertheless, the appeal on behalf of the football players was rejected.