any way to remove an animated element?

so by mistake I keyframed (aka recorded) the root node of the character so the clip, which is in the pose track, is now polluted.
so I click position and press delete - nothing happens
i press record and click pos, press delete - still nothing
what's the workaround?

also there is no RMB meny when selecting each animated thingy... what's that icon for, clicking it does nothing?