I've just dug into this issue, and here's where we stand: Until our update on March 4th we were not warning people about geotags in their EXIF, and we were not removing those geotags upon upload. Hence, people could inadvertently upload the location of their homes, which is a significant privacy risk.
With our March 4th update we now warn people, and allow them to remove the geotags before uploading. We also had to scrub geo-data from *previously* uploaded synths.
So, geodata from your previously uploaded synths has been deleted. Anything you upload from now on will not have geodata deleted unless you choose to do so, and we'll be provding a tool for you to edit the geotag of a synth. I know this is inconvenient for you and I apologize about this.
In the short term you can do this with Henri's Chrome extension, but we'll providing a tool for the masses soon.