Two days of unbridled optimism followed by catastrophe.

Just as it looked like the NHL and the NHLPA were making major traction, to the point that people were eagerly anticipating puck drop, everything went to hell, coincidentally when the players wanted to bring Donald Fehr back to close the deal. Now everything's off the table and Gary Bettman is fuming.

"What you're witnessing is very tough bargaining," Bettman said in a press conference after Thursday night's talks. "We kept giving and giving and giving. We made five different proposals. We did something completely unorthodox—we kept negotiating against ourselves."

If Bettman is upset that the owners are negotiating against themselves, he has no one to blame but himself. The fact that the NHL tabled such a ridiculous proposal in the summer gave them no choice. The owners were going to have to give up plenty of the outlandish terms they initially wanted in order to get the terms they realistically could expect (e.g., a 50-50 split of HRR).

But that isn't the usual give-and-take that happens in negotiations. Usually, you give the other side something important in order to get something important for yourself.

In the last round of CBA negotiations, the ones that ultimately cost the 2004-05 season, the players were forced to take on a salary cap and were generally hammered by the owners. All was not bad, however. During negotiations they won in other areas, such as liberalized free agency. Give-and-take.

During these negotiations there has been less give-and-take. It's more like give, give, give. But despite what Bettman claims, it isn't the owners that are giving.

The NHLPA made a big step towards the owners on Wednesday, only to be summarily rejected in about the time it takes to get your pizza delivered.

Now the NHLPA is fuming and for the first time this lockout the whispers of decertification are turning into shouts.

But what exactly is decertification and how can it help end the lockout? Below is an easy to read guide to everything you need to know about decertification.

Big thanks to sports lawyer Gabe Feldman for much of the information used in this article. For Feldman's full and much more detailed legal description of decertification, you can read his FAQ at the Huffington Post and Grantland.

The first real ripple of dissent has ripped through the NHLPA.

In an interview with the Czech newspaper Daily Sport, Washington defenceman Roman Hamrlik blasted NHLPA head Donald Fehr.

"I am disgusted," Hamrlik told Daily Sport (translated by TV Nova's Roman Jedlicka). "We have to push Fehr to the wall to get the deal. Time is against us. We lost (one-quarter) of the season, it is $425 million. Who will give it back to us, Mr. Fehr?"