Help with a Trigger Spell

I need help to complete my spell.
I have a Crypt Lord and a trigger spell based on TAUNT.
When i use this spell, crypt lord play burrow animation, but when burrowed i don't want to be capable to do anything but unburrow.
It's possible to remove all abilities (also stop, move, move-attack, etc.) and clickable only "UNBURROW"?

I have tried unit ability "burrow" of fiends... but it's bugged on heroes.
I hope to receive a response.

Thanks

-BlackSlash

PS: Sorry for my bad english

You could try replacing it with a dummy Crypt Lord with only the ability to unburrow... When he uses the taunt based skill, do a trigger that replaces him, make that unit place his burrow animation, and select that unit for the player (making it look like it's still the same unit). Now when he uses unburrow... Make him play his unburrow animation I guess, and then replace the unit with the real Crypt Lord, and select him.