How to properly rotate a raster

[Eloi Ribeiro]

Hi all,

I need to rotate a raster, for that I'm using the function ST_SetRotation, like 
so:

CREATE TABLE plot_3_rotated AS
SELECT ST_SetRotation(rast, 0.03516235334249185) rast
FROM plot_3;
But I see that is not producing the expected results and is changing size of 
the raster. What am I doing wrong?

Cheers,

Eloi