You can transfer the desired hstore key/value data to new columns:  
1-Create the desired columns (ex. addres, city, key1, key2, keyn)  
2-Run:  

    UPDATE table 
    SET 
    address=hstorecolumn->address,
    city=hstorecolumn->city,
    key1=hstorecolumn->key1,
    key2=hstorecolumn->key2,
    keyn=hstorecolumn->keyn;

Or you can simply get used to hstore, it works pretty well and I have so many good results with it that I can say IMO "hstore changed my life". lol