Yeah, definitely look for eggs with a magnifying glass. I would dip and QT that one for a while. Someone posted an excellent close up pic of what the eggs look like the other day. Wish I would have saved it, or bookmarked the thread now.
If the frags not expensive just toss it, definitely let the vendor know. If you really want to keep the frag at least pull it from the plug and toss the plug then come back in 3 days and dip the frag again.