This is how Thorax's powers return and Spider-Mare vs Doctor Squid Round 2 goes in My Little Pony: Spider-Mare 2.
[We then see Thorax meeting with Twilight]
[Doctor Squid sees Thorax]
Doctor Squid: Thorax. And Twilight Sparkle.
Thorax: What do you want?
[Doctor Squid looks at him]
Doctor Squid: I want you to find your friend, Spider-Mare. Tell him to meet me at the west side tower at 3:00.
Thorax: I don't know where he is.
Doctor Squid: Find him. [Grabs Twilight] Or I'll peal the flesh off her bone.
Thorax: If you lay one on her.
Doctor Squid: You'll do what?
[He swats him away]
[Doctor Squid takes off and takes Twilight prisoner]
[Thorax gets back up]
[Thorax sees he is having a hard time seeing with his glasses]
[Thorax takes them off and sees he sees better without them]