The Lidoda Duvha boss was banned by the League from part taking in football for one year following his rant towards referee Victor Hlungwani at Thohoyandou Stadium last year, following a 1-0 loss to Bloemfontein Celtic.
Thidiela threatened the experienced match official and told him he will set foot in Venda at his own risk.
But many people were confused when they saw Thidiela celebrating the 3-2 win over Chippa United with coach Dylan Kerr after the final whistle on Sunday.
"No, he is already banned, I'm unaware of that [entering the field]," Becker tells KickOff.com.
"I will have a look at the match commissioner's report, I'm unaware of that. As you know in terms of our rules all decisions of the Dispute Resolution Chamber... stay in working, and stay effective until set aside by the Appeals Authority.
"As far as I'm aware that appeal is set down for a hearing at five on Friday so I'm not aware that he was on the pitch during the match."
Becker was asked what if the chairman was only visible on the pitch after the full-time whistle.
"In terms of rules you are not allowed to participate in any footballing activity, you are banned from taking part in any football-related activity so I will have to look at the report to see what happened at the match," he explained.
"That is what the law says, you are not allowed to take part in any football-related activity. If he is sitting on the grandstands watching football it's fine, but you are not allowed to participate in football-related activity.
"I need to get the match commissioner's report because I don't know if he was there or if he was not there. I will call for the report and depending on what's in there I will make other enquiries, the match was televised and we will take it from there.
"His ban has started already, and it's in place until set aside by the Appeals Authority. From my point of view, from the League's point of view, he is banned. And if he is banned he is not entitled to take part in any football-related activity."