Wrap EM.synchrony call in EM.add_timer(0)
Wrap EM.synchrony call in EM.add_timer(0)

It seems @mrak tried to do this in
fcddf596f633ad22769bd7b884d79606f3fb701e but it didn't work because the
EM.add_timer(0) was in the EM.synchrony and not the other way around.

braintree/big_brother,braintree/big_brother