I disagree about the disclaimer of interest threat ending the lockout.
If you look back to the previous two lockouts, you'll see that the NHLPA was bullied (or felt like it) and wanted that to end. The hiring of Donald Fehr, a known hard liner on the side of labor with a history of labor disputes. When Fehr was hired, there was going to be a lockout. Almost no negotiation was done prior to the actual lockout which is par for the course for the NHL but something new for the NHLPA. Fehr's strategy was to make lockouts in the future not seem like such an painless move for the NHL and he did so.
As the process moved from forward after the lockout, it was the NHL negotiating with itself. All of the proposals the NHLPA suggested were only small ideas of what could eventually be in the final agreement. Each successive comprehensive NHL proposal incorporated some of the ideas the NHLPA had suggested. It wasn't until Bettman announced that there would need to be at least 48 games in the season for it not to be cancelled and that the deadline for that amount of games would be Jan. 19. Only when that deadline approached did we see the NHLPA actually counter an NHL proposal with their own, comprehensive proposal. That's when the horse trading began and the deal was done relatively quickly after that point.
Donald Fehr's strategy all along was to drag his feet for as long as possible to not only get the best deal for the NHLPA but to, more importantly, frustrate the NHL and show them that a lockout is not an easy button for labor disputes.