I think that this is quite common and this is where the 2 month and 3 month data is useful. In your case, when I look at the 3 month data, it's clear to me what your intention with the "non-powered up" STEEM is.

If this non-powered up amount was far greater(e.g. 1000 STEEM) and had been accumulating over a longer period (i.e. the spud4steem initiative had been ignored), I'd wonder why... leaving a large sum sat in your wallet doesn't benefit anybody. It's better off powered up to help you and the community or in your bank account helping you.