Assalam walaikum to all
I haven't read and visited the given links, but
Chapter DCCCXXXII, Sahih Muslim
Anas reported that Allah's messenger(may peace be upon him) was asked about the use of Khamr from which vinegar is prepared. He said : No(It is prohibited)
note: khamr is refered as being any intoxicant.In this case it is wine.
It is on the basis of this hadith that Imam Shafi'i and other Ulama deem the use of such vinegar as forbidden which is prepared from wine. But Imam Auza'i, Imam Laith and Imam Abu Hanifa are of the pinion that there is no harm in he use of it, for when the wine is turned into vinegar, its very nature changes and it ceases to be an intoxicant and thus there is no prohibition on its use.
Well I've just the text of the book and its up to u to stick to wat u think is the best.
May Allah guides u, me and everyone.