Sorry, but I find it kind of starnge to find oneself attacked with aikido, no? I mean, the MA is more on the defence side than attack. The only thing I can make out of this is if an Aikido technique is being done on someone, if he can turn it to his gain.
In this case I have seen my sensei working with the advaced students and if he can find an opening, he will turn the technique around and turn uke to nage and vis versa.
In this case it's actually being very attentive to your partner and seeking his mistakes. Of course, the more advanced you are, the harder it is to find an opening and more of your techniques will work without your partner being able to do something about it but accept it.