EBECatty, obviously there are always more facts and circumstances, but based on what you have described I would consider trying to come up with what I considered a reasonable interpretation (including filling in any gaps if the document is flawed, as seems to be the case), and then getting the participant to agree that's all she or he is owed. Not ideal, of course. There is, in essence, a latent "bona fide dispute" about what is owed, of the type described in Treas. Reg. 1.409A-3(j)(4)(xiv).