The Chelsea midfielder was sent off for kicking Swansea ball boy Charlie Morgan during the Capital One Cup semi-final second leg.
"You can't take the law into your own hands," the PFA chief told BBC Sport.
"He lost his head and had to receive a punishment."
Taylor added: "You can understand the frustration of wanting to get the ball back but his actions were unacceptable and the referee had no alternative."
The Football Association is reviewing footage of the incident.
Hazard was dismissed for violent conduct, which normally carries a three-match ban, although the penalty can be increased "in "exceptional circumstances".
To make matters worse, Chelsea were dumped out of the competition. Swansea now meet Bradford City in March's show case final at Wembley.