Actually I had a similar experience with the M3Ti's and the CSS2 stands. Originally, the stands sat on the carpet without spikes. Just for fun, I screwed in the spikes, adjusted them so that the stands were level, and popped in a CD. The sound increased in clarity and impact. Then I remembered what an audio dealer had said to me about stands: for a carpeted floor, use spikes so that the stand is coupled to the baseboard underneath. It makes the stand more stable so the speaker doesn't move as much when it's playing music. Same thing goes for the floorstander...
