Actually the precedent has been set with Yokozuna
Takanohana's wedding. It was all arranged by
Takanohana's wife Keiko who used to work for Fuji TV
and they did broadcast the event exclusively.
(mezosnip)
Still the traditional customs die hard in the sumo
world so anytime they are not followed, then some may
get upset. I believe one of the reasons Mainoumi did
not stay was to do with his marriage. He went against
the wish of Sakaigawa oyakata to marry his daughter
and instead married an owner of restaurant with three
kids.
As for the story, this time coming from Shukan Post,
another notoriously low class weekly with a definite
anti-sumo slant, they are just regurgitating what
YuKan Fuji tabloid has originally "reported".