warped front brake rotors - did you have the tires rotated or removed
recently - generally it is the boys with the impact wrenches - you
might be able to reduce the shimmy by retorquing the lug nuts.

A word about tightening lug nuts - if you tighten lug nut #1 to 80 FP
or whatever your manual sez - much less for fancy rims - and then
tighten #2 thru 4 lugs to 80 FP - #1 is probably way tight cause the
wheel was not centered till the other 3 lug nuts were tightened.
Partially tighten them all and then go to the required FP (Foot Pounds
of torque).

I never let anyone with a impact wrench even get close to my lug nuts -
even if they have torque sticks. Rotors are fairly easy to replace on
the later accords. A DIY job.