vx shakes violently please help!

[add|ct]

Actually, mine seems to give less extreme symptoms, but similar to the one's fobx is dealing with. I was wondering if it was the lean burn or if it was DFCO. I also suspected the clutch as well. Other than worn syncro for 1st gear, I don't think its going bad. I can shift through all of the gears, it just feels like its stuck in VTEC spooled up when I try to just short shift from time to time.

Usually, its easy to just get in and drive in FE, but at times it just acts like if I'm not really getting on the throttle it kinda starting feeling choked.

At other times, while using engine breaking, I'm going from 5th to 2nd(1 gear at a time if I can help it) and eventually making a right turn onto my street at about 10-15 MPH in 2nd gear. While doing this I get this awkward 'pop' like sound when I go back in on the clutch to shift into 'N'. I live up on a hill so I'll slow back to 5 in 'N' and then double clutch for 1st gear. Still, the way it acts makes me wonder if something with the clutch is off.

Until I get the LAF sensor replaced, its hard to know. Is DFCO with engine breaking considered a 'Lean Burn' mode or is the car just 'bucking' from fuel cut off then to resuming?