The answer is…this sounds normal to me. The VC works when there is a difference in rotation between the front and rear wheels, which is typical when parking, so some power gets transferred to the front wheels because the VC is locking up (as expected). There is no harm happening to your differential due to this. 

> On May 7, 2016, at 12:35 PM, Grant Johnson <smiley.grant@GMAIL.COM> wrote:
> 
> Hey, when I drive my syncro on the freeway, the front wheels are binding up
> when  I try to park. I don't have a decoupler. I'm trying to figure out if
> this is an emergency where I risk frying my transaxle, or if I can get away
> with driving for a while. I don't know how feasible it is to install a
> decoupler myself in the street.