((Wait, what? What is he trying to do? Replace bits of his torso with containment foam, then break them off, then slide through the hole?))
Yes, he obviously cant fit through with both arms so logic dictates he must lose one, or both if it helps.
Okay then.
[Containment-Foam-Impedence-Avoiding Roll: 18
+5]
[Escape: 17]
Steven slips through the foam and the hole, before manifesting in front of Slither.
"I do believe--" Steven is interrupted by Slither waving his arm, causing a large serpent to come off of his arm.
[16v3]
It swiftly coils around Steven.
"Sorry about this, but you have proven yourself to be a criminal. Repeatedly. For one who hates being called a criminal, you commit quite a number of crimes. I'll inform the warden of your lack of biological needs once you are secure." Slither layers smaller snakes on Steven, binding him, while also thumbing his phone.
"Oh good you actually do know who I am. Surely, someone such as you can understand the merit of not telling the full story of what I can do for no reason. Not only do I have to trust you, but I also have to trust those that you trust."
"And why don't you trust us? Aren't you a hero, too?"