The much-hyped 'N SYNC reunion at the 2013 MTV Video Music Awards turned out to be more of a cameo by the boy band, who essentially just supported Justin Timberlake in his Video Vanguard Award and performance ... and it turns out, Timberlake's bandmates (Lance Bass, J.C. Chasez, Joey Fatone and Chris Kirkpatrick) were thrilled for the 'Mirrors' singer, but they were less than thrilled at how the show turned out.

"They were pushing for more," an insider dished to Us Weekly. "While [Timberlake] was thrilled they could come for him, he didn't want the reunion to be the whole thing. They originally were told that it was going to be more of their old hits, not just 'Bye Bye Bye' — but then Justin reworked it."

You know who else was pushing for more? Hungry 'N SYNC fans who expected more than merely two out of 15 minutes of Timberlake's performance to be with his four brothers from other mothers.

Still, the source said that the band as a whole were stoked to be part of the event, gushing, "They loved being all back together. It felt like the old days!"

Those feelings were confirmed by Bass, Chasez, Fatone and Kirkpatrick, who each tweeted about how much fun they had:

The only member who didn't gush about the 'N SYNC reunion was, well, Timberlake, but he did express his gratitude for his bros in his acceptance speech. "I'm taking this home. Half of the Moonmen I've won, I've won with those four guys right there … we can keep it at my house, but I'm gonna share this award with them."

Here's hoping they haven't said 'Bye Bye Bye' for good, because fans want more, more more!