Cleaning dust(?) off my E-M5 sensor, help!

[slvs]

I just noticed a speck on my E-M5 sensor (see photos below), it just showed up today and I tried an air blaster and it didn't move it at all, so I'm wondering if it is dust actually. 

 

I read that you aren't supposed to go after the E-M5 sensors with a Lens Pen SK (or other sensor cleaner) because of how they're mounted with the 5-axis IS so I was wondering if anyone here has had to clean the sensor before, how did you go about it.  Did you bring it to a professional, send it back to Olympus, or do it yourself with no ill-effects?

 

Thanks in advance!

 

Photo taken with the E-M5: http://imgur.com/64bKArW,Avh5LYE#0

Photo taken of the sensor: http://imgur.com/64bKArW,Avh5LYE#1

 

[slvs]

Update:

 

For those of you who encounter this in the future,  I bit the bullet and (against Olympus' recommendation) cleaned it with a lenspen sensorklear.

 

After a fierce battle with a speck that, to my surprise, was stuck on there pretty good it came loose and I was able to wipe down the sensor.   The sensor bobbed around quite a bit while I was cleaning so I checked the IS immediately afterwards to make sure I didn't wreck my camera, and it still performs beautifully, even handheld with an 85mm it looks like it's on a tripod.

 

So for the record, I didn't have any problems cleaning the sensor with a Sensorklear, though I don't hope to make a habit of it.