An actual blur that directly modifies multiple pixel values cannot be reversed. Things like swirls and motion "blurs" potentially can be - but I wouldn't even call those blurs as they are more of a directional transformations.
You can reconstruct a plausible face by deblurring, ie. one that looks sharp and human. But if you want to identify someone having a plausible picture with a pair of eyes in a plausible position doesn't help, you need a fairly accurate assessment of the distance between the correct eyes, and that's susceptible to loss of information during blurring.