With option A, you need not go back to Bangkok -- you could go from the border to Nakhon Ratchasima for example and get the bus north from there.
Otherwise, no secret way unfortunately.
#2 somtam2000 has been a member since 21/1/2004. Location: Indonesia. Posts: 7,789
Send somtam2000 a private message Where has somtam2000 been? Website Twitter Facebook Flickr Google+ Instagram Pinterest