After months of negotiating, MLB opted for the implementation of a season in accordance with their March 26th agreement with the MLBPA. The players still have to agree to show up, which is expected to become public knowledge today. By not agreeing to a deal with MLB, the PA retained the ability to levy legal action against the owners. Their decisions on both playing and taking legal action should become clear in the near future.
The rejection noted above lead to the implementation of a season. The incompetence on both sides has become increasingly evident, and Monday was only a continuation of that incompetence.