If the OP is asking what Disney's policy is, then the answer is one room per adult AP. If the OP is asking what can be done, then I have no doubt that people have been able to get more than one room with a single AP since this policy was enacted. There seem to be varying levels of enforcement of the policy on APs.
For example: you do not have to have an AP when you make your booking (if you do it by phone). Policy is that you must have an activated AP (not a voucher) to show at check-in. However, you'll find examples here where some were allowed to check in with the voucher and come back the next day to show the activated AP. Still others say they were never even asked to show their AP.
Definitely not encouraging anyone to break the rules here. Just pointing out, as is sometimes the case on the boards, there is some confusion over policy versus what "can" be done. I wouldn't want to risk being slapped with a rack rate room at check-in, even if I was the rule breaking type (I'm not).