I've never once heard an opposing team ask another team to not celebrate on their field because of "safety." Sounds more like the D-backs have some sour grapes over choking away the division they led as late as July 21.
2015 Obligatory Attendance/Record Tracker
LAST GAME: May 22 - Sox 3, Twins 2
NEXT GAME: June 8 - Sox vs. Astros