Doesn't sound right because it's not right. You can't take 500k and add it on to next years cap just because you didn't spend it. HOWEVER, if players agree, you can front load contracts which means that you're just paying players in advance one year and in return they recieve less the following years, which could in theory free up extra money under the cap for following years.
Whether the Bulldogs have done this or not I have no idea.
Thanks for clearing that up. No wonder this subject causes so much discussion,there are so many variables involved.