Again, this isn't about salvation. If it were, you'd be right on.
just keep in mind that Jesus told His followers to follow the Mosaic Law and to teach others to do as long as we're here. Sure, Jesus told His followers to follow the spiritual understanding and application of the Law, but He also told us to follow the physical.
Surely Acts 15 is saying that the Christians should abstain from food offered to idols, blood, strangled things, and fornication, which if they do, they will do well. It specifically mentions circumcision and the law, and that the apostles gave no such commandment to keep these. If the apostles and elders really simply meant that circumcision and the law (Moses' laws) were unnecessary for salvation, couldn't they have said something like "Now it is good for a man to be circumcised, and to keep the laws of Moses, but these are not necessary for your salvation", or similar. Instead, they totally disavow these "We gave no such commandment".
Acts 15: 22 - 29
22 Then pleased it the apostles and elders with the whole church, to send chosen men of their own company to Antioch with Paul and Barnabas; namely, Judas surnamed Barsabas and Silas, chief men among the brethren: 23 And they wrote letters by them after this manner; The apostles and elders and brethren send greeting unto the brethren which are of the Gentiles in Antioch and Syria and Cilicia. 24 Forasmuch as we have heard, that certain which went out from us have troubled you with words, subverting your souls, saying, Ye must be circumcised, and keep the law: to whom we gave no such commandment: 25 It seemed good unto us, being assembled with one accord, to send chosen men unto you with our beloved Barnabas and Paul, 26 Men that have hazarded their lives for the name of our Lord Jesus Christ. 27 We have sent therefore Judas and Silas, who shall also tell you the same things by mouth. 28 For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things; 29 That ye abstain from meats offered to idols, and from blood, and from things strangled, and from fornication: from which if ye keep yourselves, ye shall do well. Fare ye well.
@Danschance - If you must be explicit, it might be better to describe physical circumcision as circumcision of the foreskin (Gen 17), rather than of the entire male member. I know the Pharisees are/were bad guys, but they weren't trying to trick their enemies into castration. Or at least, not that's recorded in the bible!
