If it wasn't at a true trace it could possibly seperate in the mold, and you will know it when you see it. If it was at a true trace and just very very thin, it should be fine. It might take longer to set up, but will become soap. When I'm wanting to make a swirl, once the oils and lye become opaque (but no trailings like you usually get in trace) I will take out my portion to be colored and start pouring the soap into the mold. It's never seperated yet, so I'm thinking yours should be fine. Only time will tell I guess. Good luck and let us know how it turned out.