Is this being reported anywhere besides RTE ?
"Earlier, Tory MP Andrew Bridgen, who led opposition among Conservative backbenchers, said the situation on the ground may be evolving.
Mr Bridgen told RTÉ News that information emerging from the UN team may have helped stall military efforts, saying he suspected the attack may have even been an accident.
The UN team will not be able to confirm this publicly, as they are merely reporting on whether an attack did take place or not."

http://www.rte.ie/news/2013/0829/470916-syria/