It's back to the drawing board for University of Florida professors and school leaders. All signs had pointed to the end of a nearly six year struggle between the two sides, but not anymore. Union president John Biro says contract negotiations fell apart Tuesday night.

On Monday UF and faculty union officials reached an agreement in principle ahead of scheduled impasse hearings.

In an email sent out Wednesday, Biro told faculty members that UF moved away from commitments they originally proposed on Monday. He would not give specifics. University of Florida spokesperson Janine Sikes will only say that negotiations are ongoing.

Biro said even after six years, the union is willing to wait a little longer to reach a resolution.

"We are ready to continue talking as long as those commitments entered into on Monday are honored," said Biro.

Should negotiations prove ineffective impasse hearings will have to be rescheduled. Something both parties hope doesn't have to happen.