Change of employer while in India for vacation

[Kpmrh]

I have been in US since 2006, and have an approved I140. My I797 is approved till April 2015. I came to India with family in Nov and had to go for stamping. We were handed 221G form which said administrative processing. Initially they didn't ask for any documents but after a month they asked to submit all I797s & petitions, which we did. No news after that.

Is it possible in this situation to transfer my H1 to another employer while I'm still waiting? I understand that the GC process will have to start from the beginning.