Woah. Slow down. Things just got crazy...well, more crazy.
Regan and Cornwall totally went off the deep end. You do not pluck someone's eyes out and then step on it! (Totally reminded me of Kill Bill for some reason). I get Regan going a bit crazy, it may just be in her blood, but Cornwall seems to be doing most of the damage. Cornwall's lines "Though well we may not pass upon his life/ Without the form of justice, yet our power/ Shall do a court'sy to our wrath, which men/ May blame but not control"(3.7 25-8). He's pretty much saying "Screw the rules, I'll do what I want". They're going rogue!
And the scene in the cave with King Lear, Edgar, and the Fool holding the mock trial really creeped me out. Something about the amount of insanity really disturbed me. The Fool was especially frightening, cause to me it seemed like he was just pushing them further into their madness.