I started getting this problem really bad, the same way you describe it. Only seemed to be in the morning when it was cooler, could not feather the gas without having it lurch all over, just nasty. I had it in for a routine service at the local Honda dealer here in Orange County (Fladeboe Honda), their tech noticed it and suggested a replacement of the CVT fluid. After reading all the gloom and doom posts here about there being no fix, I never bothered to mention it to the service guys, so I was surprised when they noticed it and offered the advice of changing the CVT fluid. You know what? That worked like a charm. Shuddering was completely eliminated, and has only recently started to come back (about 2 years and 20k miles later). The service tech said that the CVT fluid gets gunky really fast, and should be changed every 10k miles or so.
Before ripping apart your engine to clean the elusive EGR valve or whatever the hardcore gear heads suggest... try this simple solution. If it doesn't work for you, at least you haven't dropped a ton of cash or time.
**Edit: Just realized that you've got the manual version... obviously, there won't be any CVT fluid unless you've got the CVT. Anyway, this solution works on the CVT for all those out there who need help!