I think it happens to anyone trying to evolve. Not only music.
For me there is only one cure: keep on practising (actually its more complicated than this, you will have to review your practice routine etc)
But here is the thing that very few people tell you: What you practice today will have its full effect in two or three weeks time. I'm not joking here, and i have found this to be true for all kinds of subjects, physical training, music, maths, language etc.
Sadly today's world is full of quick fixes that lead people astray. But think about it, do you have to upload your remix today? Or will it suffice in a week or two? Who will know when you first listened to it and decided to make a remix?
And that's part of the problem for me: I just don't practice any more. I just play and rely on the techniques I've already learned to get me through. Wikiloops is my practice. On the plus side it gives me inspiration, ideas I wouldn't think of, prevents repetition and introduces a random element to the playing routine keeping things more interesting. The downside is that I'm not working at all on core technique per se.
Although, in my honest opinion, the most important and significant change in my playing came when I stopped playing for a few years at the turn of the century. Before I stopped playing, I was a highly technical player with very precise and fast rudiments. But I'd say mechanical with it.
When I came back to drums and my technique had lots of rough edges, I found I was a far more musical player, using technique to access what my heart said to play rather than technique for technique's sake.
Quite hard to describe, really...