We will be rolling out several small fixes mid-day today (Jan 29.) We do not anticipate any disruptions or problems, but f you spot any unexpected issues after 12 noon (PST), please report them in the designated thread in the DG Site Updates forum.
I still can't tell, but if the plant is small enough try wrapping a plastic bag around the pot of soil, and dip the whole foliage in some soapy water. Basil is tender and you will probably break it- if it were me I would take some tip cuttings that I was sure was clean, and destroy the rest of the plant. Unless it has special value to you, seeds are very easy to start.