I seriously do not understand you people who are outraged about this.
Do you honestly want people suspended for such innocuous collisions? It isn't like he charged out of the line and squared someone up. He was running horizontal to cover the play and ended up colliding with a player. There was not much else he could do.
No one was hurt, nothing bad happened.
Ignore that it is Slater for a second (because I honestly think peoples personal opinions of him are clouding this a lot), if he got suspended for this, it sets a really shitty precedent and ensures more people in the future will get suspended for 2 weeks for something that barely even warrants a penalty.
There was no intent to "shoulder charge". You can't even say it was a 100% shoulder charge because there is definitely doubt about his arm being tucked which is one of the hard and fast definitions in the rules.
If you can't prove beyond reasonable doubt, it is not guilty.
I hope that the rules are amended after this to allow some more wiggle room for these incidents so that you rule sticklers can calm the fk down.