Having read it myself years ago, yeah, it was definitely quite the cluster****.The Clone Saga was the culmination of a lot of bad editorial decisions over several years with regards to Spider-Man, motivated by a "getting back to the basics" approach but pushed as a clear money-grab to capitalize on all the other character events going on around that time. Either you believe Marvel was simply doing a quick story to create a new Spider-character in Ben Reilly or they were trying to replace current Peter Parker with a new-old Peter Parker that didn't carry with him the "baggage" of the marriage. Either way it was never going to work unless Marvel committed to the idea that new-old Peter was the real Peter Parker and presented him as such, but that's not what happened. Instead they made him blonde, called him "Ben Reilly", and took all the amazing (no pun intended) supporting characters away in the process.
I can look back more fondly on the actual saga itself now because of the benefit of hindsight and that it was such a crazy soap opera. But it was doomed to failure once it became clear no one really knew what to do with Ben & Peter once the latter was revealed (erroneously as it was later written) as the clone. And no, Norman Osborn did not work as the mastermind behind everything.
For those that are interested and have a ton of time on their hands, here's a link to some amazing insight on the behind-the-scenes of the Clone Saga. It's heavy reading but definitely worth the time - I even go back every few years or so to re-read it:
http://lifeofreillyarchives.blogspot.com/2008/03/