Dunno if this has been said, but you can cancel Lex's forward dash with a back dash. You can also cancel the recovery of it with down, back, normals, and maybe more. One thing I've been using is dash forward, back cancel, bf2 (ff~b~bf2). What this looks like is basically Lex doing his bf2 out of a dash. The cancel doesn't make him go a shorter distance, but it does seem to cancel the last recovery animation allowing you to move around. I'm sure the other characters can do this as well, but I've really only been putting any time into Lex.