I like the idea of abstract movement, but I'm not quite so clear on how to handle one particular situation. I'll try to illustrate it with an example.
A Wood Elf Waywatcher and a Dwarf Troll Slayer are standnig at close range to each other, staring down a nasty Beastman Wargor who is also at close range. The Dwarf Troll Slayer, filled with bravado, bellows out "Hang back, Wood Elf! I'll take this brute!" The Dwarf's player spends his maneuver to engage the Wargor, following up with a melee attack. The Wood Elf wants to put some distance between herself and the enemy, since she is not as tough as her Dwarf companion. She uses a maneuver to move to medium range with the Wargor/Troll Slayer engagement and then she fires off a shot from her bow.
At this point in the battle, the Troll Slayer and Wargor are engaged, and the Wood Elf is at medium distance from that engagement.
On the Wargor's turn, he decides to go after the Wood Elf, thinking that she will be easier pickings. What the Wargor would like to do is to "disengage in the direction of the Wood Elf", basically. So, could he use a maneuver to disengage from the Troll Slayer, moving to short range with him, while simultaneously move from medium range to close range with the Wood Elf? I imagine the Wargor is circling around the Dwarf until he is effectively right between the two heroes, so that when he moves away from the Dwarf, he is simultaneously moving toward the Wood Elf.
Is that a legitimate interpretation of the abstract movement rules?