Widase and Vitrase are both preparations of hyaluronidase. They will both be effective in correcting contour irregularities from hyaluronic acid injections. 2 vials can be a lot for a patient to handle, especially on the first injection.
The skin sometimes has a hard time redraping around this much new volume, especially if it is all placed in a concentrated area. It's the equivalent of trying to get a fitted sheet over a new mattress. You really have to strech hard to get it to fit. After the mattress settles and softens, then it fits without a problem.
I usually limit filler treatments to 1 vial and then invite patients to come back in 2 weeks if they feel additional correction is necessary. Most patients don't feel they need it and the ones that do are much easier to inject (the mattress has already settled).
Either way, with or without hyaluronidase injections to smooth out your result, your problems are not permanent.