You still benefit from the effect on a hit & the effect still needs rolls to have any actual impact so this one seems fine. It is a warlord theme to grant attacks to allies afterall.
The problem is, the effect is already very, very strong for a daily, even for Warlord - handing out a free attack to every party member. Being able to do it over and over again is clearly abusive. You should never be in a situation where missing is 10x better than hitting.
I'm definitely hoping this (and Hobble) will get Errata. Having such potent effects on a miss is just a bad idea - I could accept the swordmage one since it showed up in a Dragon article, but seeing this as a repeated theme in MP2 is rather disappointing.