What model lagoon was this? It should have had a traveler spanning the back of the Bimini or a two part main sheet some companies are switching to which has each main sheet anchored near the corners of the Bimini. When you say short traveler can you give us a idea of length? Is it possible the topping lift was adjusted to short forcing the sail into that position? I find they are sometimes need to be released a bit to let the sail hold its proper shape.
G