Get a roller. Heat it with a hair dryer to reactivate the glue and then roll it.. The roller is the key here as it applies much more pressure than you could ever do with your fingers...Continue rolling the area until it cools...
I pulled the whole corner up when I did this so I could put it down straight and I rolled it from the center to the corner to keep it flat...It works great.

I've also heard of using a hobby iron like I have for building my model RC airplanes.

Although too late for this one, I offer a trick I learned to prevent bubbling near the legs on decals.

After putting the legs on over new decals, take an exacto knife and trace the outline of where the leg touches the cabinet. This will allow the leg to move during nudging and general pin movement to prevent bubbling / puckering of the decal.

+1 on the heat gun and roller

+2 on using a heat gun (and roller).

Some of you probably already know this, but I learned a trick that helps prevent this. When putting your legs on leave the bolts a little loose. Once the game is up on all fours, then tighten the bolts all the way. It seems to work well.

That sucks, hope you get it fixed