I suppose if you set a group of bouncers and call them the 'Enforcement Team' you can expect them to behave a certain way. Personally, I still feel I am correct though, if I worked as a steward I would be included in your rogue group because I have an SIA badge, I've never worked as a bouncer but my management role includes a lot of dealing with drunk people and it is useful.
Personally I would like the club to use a similar system to that which we employ at my place of work. That is a simple three strike rule, where the individual is informed of what is happening at each stage.
1. A gentle warning that their behaviour is outside the rules of the venue (in this case the Amex). This would be given by the nearest steward to the incident, this steward would then move away, so as to avoid confrontation.
2. A stronger warning, explaining that they are running the risk of being ejected. Again, the steward that gives this warning should move away this time to be replaced by the senior steward for this area/stand manager
3. Final warning, making it clear that any repeat of bad behaviour will result in ejection.
This does not seem to happen at the Amex, in fact it too often descends in to them and us arguments between a steward and set of fans. Unfortunately, much like the catering situation there seems to be a lack of training or predefined protocol to anything that happens at the stadium with regards to staffing. If we are to be treated like customers, then we should expect the same level of customer service we would from any other business.
A very sensible solution.