We should keep in mind that this union has a partnership with ownership unlike most, in that both are joined at the hip around a singular primary goal of increasing total NFL revenue. This issue around discipline process is simply a family feud, a small skirmish in what is otherwise a tight business relationship. Both prosper, almost equally in cash terms, when NFL revenues go up. That's always going to be the most significant goal of the head of the NFLPA (Smith for now) and NFL Commissioner (Goodell for now).
In fact, getting us fans all up in arms about this, and believing that they are somehow sworn enemies, just plays into their hands of creating drama and interest in NFL football. I wouldn't be surprised at anything that goes on behind closed doors in terms of cooperation between the union and management.