I don't think IT should be suspended.
1) Without camera angles showing what IT was pointing at, it's impossible to have context for his arm movement. Without context, you can't say for sure there was intent. The refs saw nothing live. You don't suspend someone in the playoffs because there's probable evidence, unless you're Roger Goodell. You give him a flagrant 1 for making unnecessary contact, and tell the refs to be quick to curtail extra-curriculars in game 4, but that's it. It's the playoffs, it's borderline, and the officials either didn't see it live, or saw it and didn't think anything of it. A suspension would be wrong.
It is fully possible in my mind that IT did intend to hit Schroder. I'm not excusing it. But it's also possible it was incidental, and you can't take a key player out of a playoff series with 100% certainty. That doesn't exist here.
2) Stu Jackson was notorious for doling out suspensions, so I'm not surprised he would suggest such a thing. But he's not in charge any more.
EDIT: as I was posting, the flagrant 1 ruling came down. Good job NBA!