Desperate times need desperate measures. When it comes to app not reaching before close of fsw or sending the app in time and adding docs to it later on....... I would prefer latter. After all, in life, we regret the chances which are not taken.
End of the day, one can only advise, decision always is left to the person doing things. Hope you are able to see my perspective.
Good Luck!!
BTW, that advise was given in the best interest of the person. Grooby is a very sober person and there is a strong reason behind him suggesting something like that. Perhaps you could have asked him why he has given that advise.