That is definetly an uneven fret problem, or maybe a few frets came loose. I have nearly every tool for fretting in the stew mac catalog. To be honest, what works best for me with leveling/crowning is:
and
About 30.00 worth of tools give plus the cost of sandpaper. I truly believe making the investment is worth it to make your instrument play as best as it can. I would suggest getting a straight edge along with a fretting book as well if you plan on doing this yourself. Good luck and have fun!