Don't read too much into the VIX moving up on a Monday when the market is moving up. The VIX is just showing that there is instability in the market making such a quick move and will probably have some sort of correction soon. The problem is, that correction could be small.
I do agree that longs should sell into this strength and the VIX is indicating this. But it does not mean it is time to short stocks or take a full bear stance. As I have been pounding and pounding, DO NOT take a big short stance until the VIX crosses the 20 dma. I can't stress this enough and so many people have been going all in on the short side expecting the market has topped. It is fine to play some on the short side and I have been all along but until the VIX gives a clear indicator that the sentiment has changed, you just can't over extend.
2 key indicators that the market is going to take a lot of the gains back...
1. The VIX passes the 20 dma for 2 days straight
2. the SPX 20 dma passes the 50 dma on the negative side.
Those two are sure TA signs that the market sentiment has changed. Until then, you have to sell into rallies and buy on dips.
For me, I am selling the small long positions I have as I write and also buying SDS looking for a 10% gain and then exit.