West Brom are to take disciplinary action against defender Goran Popov after his dismissal for spitting during the Premier League home defeat against Tottenham.
Baggies head coach Steve Clarke admitted he is "disgusted" with the behaviour of the Macedonian international, who spat in the direction of Spurs defender Kyle Walker early in the second half.
The on-loan Dynamo Kiev player now faces a three-match ban, but will also be hit by the Baggies own disciplinary code after a superb strike from Gareth Bale earned Tottenham a 1-0 win.
Clarke said: "There's no excuse for that. There's no place for it in life, never mind on a football pitch.
"I'm absolutely disgusted with Goran's behaviour. The game changed with the sending off.
"One of the group has let the players down. It's difficult enough in the Premier League playing against 11 players, especially when you're playing against Tottenham.
"I would like to think that at some stage he will apologise. As always there will be disciplinary procedures taken against the player but they'll remain in-house."
Spurs boss Andre Villas-Boas said: "It's difficult for the ref, but Popov did what he did and Walker did nothing to react.
"It's difficult to assess but I think Mark (Clattenburg) made the right decision.
"What do I think of players spitting? It's horrible and nasty."
To make matters worse for the Baggies, central defender Jonas Olsson appeared to make a one-fingered gesture towards home fans after he was jeered for making a mistake.
But Clarke said: "I didn't see that one. I'd have to see that again."
Bale's superb second-half strike brought the Welsh international his 11th league goal of the campaign.
But Villas-Boas' joy at closing the gap on third placed Chelsea to a single point was tempered by the news that striker Jermain Defoe faces a spell on the sidelines with an ankle injury.
It has already led to his withdrawal from the England squad to face Brazil at Wembley on Wednesday.
Villa-Boas said: "We have put ourselves in a very good position to threaten for third place.
"I am extremely happy, apart from the big setback to Jermain Defoe.
"He will have a scan and only when we see the results will we know the extent.
"When we scanned Sandro it was only when we saw underneath that the injury (to his knee) was more serious.
"It is a big blow because he is an important player and person for us, on and off the pitch."