Jones confirmed some players walked out of the meeting and a full-scale training session was cancelled on Tuesday.
“There was a variety of feelings, not just anger,” said Jones.
“Anger was one, frustration, confusion and probably a bit of fear around the unknown, which can cause anxiety.
“Players were frustrated with some of what they were hearing. Some were upset and just wanted their own space.
“It’s natural individuals wanted to do that and I support that. It was just one or two players.”
Afterwards a number of Ospreys players, including Wales captains Jac Morgan and Dewi Lake and internationals Sam Parry, Dan Edwards and Gareth Thomas, shared a statement on social media which saying they “have been left in the dark by the WRU and Y11.”
Jones backed the actions of his players.
“It was awesome, it was great to see them coming together like that,” said the head coach.
“They are a tight group and enjoy each others’ company. You could see that by the statement.
“Nobody asked them to do that, it was off their own back as a group of men deciding what they wanted to say and what they wanted people to hear. I support them 100%.”