How does he use that warstomp? Is it an ability? Is it triggered or a standard ability?
If you use a regular ability for that you might want to try to change the "animation" value of the ability in the object editor and see if that works.
Its not necessarily going to work because the wc3 engine is some times a little bit odd and has secret hardcoded values.
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory