Had the same problem with a 2WD Auto. Did search on the famous Honda shudder, and concluded that axles could be the probable culprit.
Took over 2 weeks to get to the bottom of this:
1) Bought 2 front axles from Advance (cost less than ~$50 each after coupon code, dealer wants ~$300 out the door for each)
2) Jacked up car and found 3 mounts real bad and broken (front, rear, tranny mounts)
3) scramble to buy 3 mounts, almost $200 for OEM version (front from local dealer, the other 2 online).
4) Installed new mounts, one by one, and test drove, shudder not fixed at all.
5) Pop out/in driver side axle, shudder gone!
Didn't touch passenger side axle yet, not sure if I want to. All boots looked fine, and no noticeable play on any joints.
Wondering if axle caused mounts to fail or the other way around. But glad the ordeal is over.