This is why there's now a separate 'i' icon for programme info. I agree that it's not 100% ideal, but I'm not sure how to make it better... I don't think javascript allows you to say "if you've clicked on the left 20% of this field then... otherwise..." (for example), so you might end up with three additional columns in the grid instead, one to filter each of programme name, channel and genre. And that's even more ugly IMO.
Would double-click events work instead? Or even a right-click context menu, perhaps?