I'm having this same problem, and I'm heavily considering swapping to Glaive Toss. The hassle of positioning yourself to not pull the mobs halfway across the dungeon doesn't seem worth the time and effort spent to do so, considering most trash packs I seem to end up doing single target/cleave anyway. As far as I know GT is better for single target, so I'm thinking I might as well just take it and treat it as another cleave.