I can tell you I have never heard of an ENCORE version, there is a Waterworld Encore version but not a Far and Way.
I am very sure the only time this aired was on it's original run on ABC to pad time.
Sadly, the DVD is the theatrical version
In fact Far and Away was on USA the other day and it was the theatrical version. USA Network is notorious for play TV versions so if it is not played there then the chances are slim. There is a station known as Ovation which tends to play TV version once in a while but it's random.