Stokes is standing trial at Bristol Crown Court accused of knocking out two other men outside a nightclub in the southwest English city in September a year ago.
When asked about separating Stokes and Ryan Ali, 28, Mr Spure told the court: "The individual seemed to be the main aggressor or was progressing forward trying to get to another individual".
The court has heard it was Stokes who had struck Ryan Ali, knocking him to the floor.
The jury was also shown CCTV footage that, it was alleged by the prosecution, shows Hale running back towards the main group with a length of metal.
PC Stacey Alway, who arrested Stokes, told the court: "From the moment I approached him (Stokes) he calmed down and was compliant".
Real Madrid Set To Make Sensational Bid For Tottenham Hotspur Talisman
Spurs have been strongly linked with a move for Grealish, whose future at Aston Villa has been a source of speculation all summer after they failed to gain promotion to the Premier League.
"Ali responds by pushing Barry away, albeit with no significant force", he told the jury. He mentioned my gold teeth and he said I looked like a c... and I replied, "Thank you very much".
"At this point, I felt vulnerable and frightened".
"They were complete strangers". "We knew they were prepared to use weapons that could do serious injury and I feared they could have other weapons with them". He was taken to Bristol Royal Infirmary by ambulance and diagnosed as having suffered a fracture to the medial orbital wall on the left side of his face.
Hale cycled to hospital, where he was found to have bruising and a 4cm laceration consistent with blunt trauma.
He told police he "did not feel in any way drunk or impaired" and that he had consumed two or three pints at dinner before a further five drinks of vodka with a mixer in the Mbargo nightclub. This was an extreme act of aggression in the circumstances and informed my assessment of the situation. "I walked into the road to try to separate the group and get in between them. As I was on my own, when I separated two of them more people carried on behind me", the statement continued. In it, Ali denied saying anything offensive to either Barry or O'Connor, but accepted that "one of the guys" became "quite irate" after "banter" between the men.