Yes you can. It's already been done. I already mentioned this. Why do you think so many "sparrers" slowed down in pace when you could no longer spar at places like Angel Clan and Sardon's, pause-boost using the same IP, or transfer account statistics? The fact that you can't name a single person who does it today is proof enough.

Boosting is as much of a myth as "selectively sparring for points." It's not even possible, unless you do what Comyt did for the past year and abuse a glitch to reset your rating deviation.