How to hide Tachy (Global Ignore) threads from mods in forumdisplay?

[mme42]

Does anybody have any idea how I would go about hiding thread titles for globally ignored threads (tachy goes to coventry) from moderators in the forumdisplay? We've been using the coventry for a few users who we don't want to deal with anymore (because banning usually causes them to just create another account). However, the moderators are getting sick of clicking these threads only to see the message about the user being on the ignore list.

It would be nice to have these threads hidden in the forumdisplay from everybody but admins, or even everybody but the ignored user.

I believe I'd need to modify the forumdisplay.php around line 574. I tried a couple things, but nothing has worked so far (I'm not very familiar with PHP). Does anybody have an idea as to exactly what I should change? I'm using vB 3.8.x btw.

Thanks