Explain. Mess around with the fans?????
Eh, it's my understanding that they do unusual or funny shit when the cameras are turned off, like how in 10/03 Taker and Brock actually had a WWE Title match after the SD! before No Mercy went off the air. This is different, obviously, but if you want me to break down what happened I will.
IIRC, Angle and Brock were raising each others hands and posing for the fans. Then, Brock went up to Kurt and kissed him (see picture). Kurt stood there selling the kiss as a WTF? moment, then Brock pantomimed like he was just kidding around. Kurt shook his head and went to hug Brock, then Brock did a crotch-bump-type-thing to Kurt, which prompted Kurt to leave and head toward the ramp. Brock pantomimed 'What?' at Kurt as he went up the ramp.
Bottom line, it wasn't made out to be 'OMG KURT N BROCK R LOVERZ' so much as Brock goofing around.