While i NEVER, EVER doubt Mike P's advice, the thought of "forced rotation" wetsanding scares me. Again, just one member's opinion here but i have wetsanded with my PC 7336 (old machine with some use/wear enough to render it even less forceful) and even then watched my downward pressure so as to lightly apply the force.
As Mike pointed out very accurately, the 3401 can dig a little deeper if not careful.
Bottom line for me? Yes, Mike can do it but i'd be just a little more cautious being several hundred levels below his expertise and skill level.
Again, Mike, not discounting your advice in the least. Just offering my opinion on something that remains scary for me personally.