I would fire his ass.Welcome to the u-boat club. Yours sounds like the classic body seam sealing issue on the passenger side. My water was in the middle and Honda says it's a leaking window. It's in the shop still awaiting corporate approval for the repairs.
You are very right about how you might never know it's leaking based on the carpet itself....that foam backing keeps it from wicking up. I would encourage every G2 RL owner to take the time and feel under the carpet...whomever is applying sealant at the plant needs to be "educated".