Oho--I just realized what the "-5" in "Bm7-5" must mean. In looking at the Swedish tab & chords I thought it meant the fifth (F#) was in the bass. Actually, it must mean flat-fifth, i.e. F natural. I've been playing a Bdim7 because I could hear the F natural loud and clear on the recording at that point, not an F#. But that means I've been sticking an A flat in there where Dylan has an A natural.

Matter of fact, you could probably get away with any of several chords there: Bm7-5, Bdim7, or F major (sliding down one fret to the E major next). Dylan really is getting jazzy with his variation on the standard circle of fifths. From the E (or E7) he goes to Am, then kind of implies another E7 by walking the bass down (G#, G, F#) but leaves it out and goes to the A7 which gets him back to D7. Sly!