The law states you have to file it within 10 days of the transfer. The USF&WS can not give you permission to break the law. All that essentially happened is that one person gave you a verbal notice that they would not prosecute you for breaking the law. Do you trust your future to that person's word? The only way to guarantee you won't be prosecuted is by not breaking the law, and the only way to do that, with the site down, is mail the paper form to your state.