User blog comment:Telaruhn/Aldric, The Elder Guardian/@comment-3974211-20140407132635/@comment-3974211-20140408025545

No, I wasn't implying that making it single target would make it more balanced - it would still be ridiculously overpowered. When I said colliding-skill shot, I meant on the way back - a single-target grab is balanced. ;)

"Aldric swings his hammer, sending an image of it forward in a line that damages and slows enemies hit by 60%. The slow decays over 1.5 seconds. Aldric can reactivate the ability in the next 3 seconds to recall the hammer, knocking aside enemies it hits on its way back."

Lulu's Glitterlance is proof that a slow can disengage - the reactivation might be entirely unnecessary. Having it shunt enemies it hits toward him might be favourable - so it's a disengage and an engage.