Yesterday the story was about a delay in her deployment, but when it became clear that's not true and she's already in the region they try to spin a routine visit to Souda Bay, to adjust their armaments for the mission, as an emergency stop. What will it be tomorrow, or the day after, when they leave Crete without any delays? Seems to me like someone is blowing this apparently genuine plumbing issue out of proportion on purpose.
The problem with the on board sewage system is real, hard to go to war when you can't go. The problem with that vacuum system has been recurrent and requires deep flushing procedures every few weeks, this is probably what is being done now in Greece.
The crew is also restless from having been at sea for 8 months and some have asserted that there's been some angry sailors flushing tees and socks into the toilets.