But Sal and John, I think we have too little information from manitobawineo to know where that wine is in the fermentation process. You are assuming that the wine had in fact finished fermenting simply because of manitobawineo said HE was ready to bottle. So what the problem MAY be was that the wine was inadequately degassed and that MIGHT be right but we in fact have not been told how long it had been fermenting or if this carboy is the primary or the secondary. Manitobawineo simply advises us that the cap came off. We don't know if the wine was considered ready for bottling a week after the yeast was pitched, or a year after the wine had been aged, if the carboy involved was the primary or was a secondary container. We don't know whether the cap that fell or popped off was being used with an airlock (bubbler) or if it was being used to cap the carboy (so the nipples were also capped).
If the question is , Is Manitobawineo in trouble I think the answer is no, not much chance that anything terrible would have happened to the wine in 8 hours, and in fact that incident may be what is going to result in resolving what might otherwise have been BIG trouble down the road if the wine had not finished fermenting or was in need of more degassing... but if the question is what should manitobawineo do now, I think to answer that question we need much more information.