Although the title is a bit sensationalist, you can see that the talks broke down in the final stage of the conversation and both parties mutually parted ways.

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Once again, For those who are from /r/all and for those who are not aware of what this is all about: Stealing the wonderful comment by /u/Pr0crastinat0r_ms which can be found here. Full credit to him.

What is PEA?
In September this year, 7 US based teams formed a group called Professional Esports Association (PEA). The teams that participated in this were: Team Solomid (TSM), Cloud9, Team Liquid, Counter Logic Gaming (CLG), Immortals, NRG eSports and compLexity Gaming. PEA decided to hold a league of their own which is supposed to span 10 weeks and with the alleged prize pool of $1 million. They even tweeted a nice picture which can be found here

What was PEA supposed to do?
This association promised to keep the players motives and benefits in mind and share the profit of the leagues among players and owners. In a way this was supposed to be a step forward in empowering the players and making their decisions heard. PEA was supposed to be a mediator between and along with the owners of the teams to share the rewards and strategic decision making with the players. They also promised transparency to the players and the community.

What did PEA actually do?
Nothing of what they actually proposed worked out in the benefits of the players. The player representation base in the decision making committe was easily out-voted. The players were forced to boycott a league (EPL) which they wanted to play, without asking them. And when clarifications were asked and attempts to negotiate this were made, they were out-voted and they were not given the entire picture, the documents that they asked for were not shared and they were slammed with the book (their contracts) when they asked what gave them the right to do so.

TL;DR?
So all the good things that PEA promised was not granted to anyone. The players from 5 of these 7 teams got together and chose SirScoots to represent them, as their negotiations with PEA and their owners did not go well, they did not want to keep this behind the curtains. Hence they decided to write this open letter showcasing the full picture of what was promised and what really happened. Below is the summary of the article listed in the post.

The open letter post

The comment also proceeds to write a summary of the article, I suggest you take a read if you cannot read the whole article. The article itself represents the thoughts and perspectives of the players of these teams represented by SirScoots.

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Additional reading material on this matter and the aftermath of the letter (responses of owners, a twitlong by ReDeYe and a video by Richard Lewis) can also be found in this compilation thread.

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This just in - Andy Dinh · @TSMReginald: Here is why I am removing Sean Gares.

TLDR: My players AND Sean had never expressed ANY of their feelings about PEA or the letter to me privately, if they did I’m open to discussing the issue with them. I felt blindsided by the letter once it was published on Reddit. I reached out to the players individually and they all said Sean told them to do this. I felt Sean, my player, was working to hurt me without any intention of compromise therefore I no longer wish to work with him.

Reginald has included conversation logs with Sick and Shahzam and says "Sean convinced all of our players to tweet with the hashtag #playerrights which suggests that TSM is mistreating all of our players and taking their rights away. ". In one of the conversation logs it was said that "We didn't get to see the letter till it was published"

Another "unified reply" by Relyks, on behalf of the remaining TSM players, Sick, Shahzam, Twistzz and himself

To address some of the statements made in Andy's post, in no way were we manipulated by Sean. Some of us may have had more information than others or been more involved in this endeavor, but we all understood what we were doing when we gave the okay to put our names on the letter. Also, the conversation logs with ShahZaM were before Sean was 'released'. We just want to make it clear that we weren't throwing him under the bus.

Sean: "My reply to @TSMReginald"

CLG Hazed: About Regi's reference to my tweet about George.

Edit: added in more information from Regi's letter.
Edit2: added in more info from Relyks twitlonger. Edit3: added sean's reply to Regi.
Edit4: added hazed's statement