Compromise (I hope): Start a Minor Houses of A Song of Ice and Fire or thereabouts. Move the info about their history there, as well as the key points there. Move complete Roose and Ramsey bios to minor characters. However, I think this particular article should be kept around for 2 reasons:
1. Simply put, it's a good idea to centralize information. Somebody who's reading minor houses and wants to read about Roose and Ramsey will find it easier and more intuitive to go to a House Bolton entry than a minor characters entry. 
2. From all indications, the Boltons will be major players in ADWD (I think Martin saying that a Theon is coming back is better than mere "speculation"). Every major Westerosi institution that's had a POV centered on it (major houses, Night's Watch, Citadel) has an article. It seems pointless to get rid of this now and bring it back a year later. 
I think that "current" is both too ambigious and potentially spoilerific. The former may be more verbose, but it's also more exact and less troublesome.