I have this issue, as well, but I have it in both directions: When I pole with other people around, either on skype or in person, I find myself stronger and a little more bold when it comes to trying new moves... but, I am also super shy when it comes to actually dancing, freestyling of any kind becomes almost impossible, because I feel so embarrassed. Something I'm working on.
On the flip-side, though, I do find myself a bit more timid when I work on new moves alone. I think it's partly because I'm feeling my way into and through the move, I'm more aware of what I'm doing with my body, my contact points, and- yes- the pain. I'm also better at being creative and free, getting into the music I love to play, and no longer feel shy about doing my dancing.
I think, in many ways, it's about your perspective, and how well you push yourself when you are alone. There are merits to that hyper-awareness of dancing alone, there are drawbacks to feeling like you have no one around to share with.
I think this is why many of the people here, and hopefully myself when I get my camera going and figure out a good angle, put up videos. We're able to put up our triumphs and our frustrations and share with each other.
Skype jams are also super helpful, because we can work off each other!
Try to find the good points of your situation- you may find that working alone adds something else to your dancing, or to your perspective, your style. :)
