Well Dresden also had CEV Cup match with a horrible journey back home. And about Djokic, maybe it's a problem with the coach Potsdam's players in general seem to get along with Hernandez very well, but he's surely not the easiest coach out there...
And zeleznicar had very bad experience traveling to germany, some flights was delayed, they were almost 24h on airport, total mess.
Maybe is problem with a coach, but she is definitely used to coach who like to yell a lot.