Here's what I see on the highlights.
Smith makes a movement forward with his face and shoulders come up, like a spitting action. Myers reacts with a glove to the face and Smith goes down cheaply like he's been shot. Myers then makes a gesture to his mouth at ref. Not conclusive but something happened there, Myers not known for being so quick to react.
Frank makes two forward motions with his upper body to push Tyson back, looks like second one he makes head contact and Tyson grabs his leg to get his attention. Bowns has seen something as he also reacts. Let's be honest Tyson is handy but sparing with his fighting. He has stood up to Olson and Westgarth when they take liberties but does not drop the gloves lightly. He was still fuming after the linos split them up, something made him flip.
Lastly, Smith looking to fight anybody at the end regardless of them being a willing combatant or not. Cowardly, respect to Batch for putting him in his place, on his arse on the floor. I'd be more than happy for DoPs to announce that being #BatchSlapped was punishment enough so no further ban needed. And as for Clan fans applauding him off, bizarre.
All in all Braehead were put back in their box, any league win would be tainted by the conference system giving them so many games against teams found in bottom half of the table.