Same thing here. I got my Maroon a BTA the other day in hopes it would elimiinate his "tail wagging sand stirring".
When the BTA was near the bottom of the tank before he found a good spot to set his foot, Maroony was still stirring up sand, however, now that the BTA is up on the top of some LR, I havent seen Maroony do it since. (He LOVES his BTA!)
Took him 30 seconds to get into the BTA. LOL
There is a post somewhere in here about one fish owners problem with his Maroon doing that also. I'll see if I can find it.
Dxtr