[Avodah] Mussaf during Mincha time

[ephraim.stulberg at utoronto.ca]

In shul this Yom Kippur, Mussaf did not begin until after the  
acceptable period for davening Mincha had commenced, i.e. after 2pm in  
Toronto. The Bavli (B'rachos 28a) rules that in such a case, Mincha  
comes first. TOsafos write that there are those who say that this is  
only if he will be davening the two one right after the other; if he  
intends to do Mincha much later, then he should do Mussaf first.
The Tur (OC268) writes that his father, the Rosh, used to say Mussaf  
alone in its proper time rather than wait for a dawdling congregation.
Does anyone have any experience with this halacha? Has anyone ever  
done Mincha first on YOm Kippur?

Ephraim Stulberg