You may perhaps have noticed the recent explosion in hijackers etc.
The members of ASAP come from many different forums and yes, have had training in the use of many different software tools and to be able to claim membership of ASAP have been able to demonstrate a good standard of "cleaning up" of the above types of infection. Their first priority when helping is to do no harm to the victims PC which is why they do undergo training at various forums such as Spyware info and Tom Coyote forums.
But not only do they clean up infections but they are also able to assist in the finding of new hijackers/infections and the development of methods to combat the new infections.
Many of the members actually work in the antivirus and anti spyware field and offer their advice and help for free.