The Ghostcrawler is on aggro-mode folks, be very careful not to ever use your Totem-Stomping Macro.  There is no telling what a GM might do if you are caught. Blizzard is going to nerf the ability to auto-target totems to destroy them in a future patch.—source

Blizzard Quote:

Blizzard does not like the gameplay of totem-stopping macros and we intend to stop it. Destroying a totem should be a viable strategy but it should be a choice and require some effort on the part of the destroyer. Making a macro to have your pet attack the totem without having to target the totem first does not in our minds constitute enough effort.

This will require a technical change that we don’t have in place yet. We will announce when we are making that change when we know for sure that the change is going live.