Bkdoss,
Yours is a very good question.
My FCOM says:
GO AROUND........... ANNOUNCE
FLAPS lever..........SELECT AS REQUIRED
Retract one step of flaps
It makes no allowance for a go around in flaps 1 and therefore, requires retraction of flaps, potentially putting the aircraft in an undesired state.
Moreover, the standard callout is "GO AROUND - FLAPS". not GO AROUND, not GO AROUND STANDBY FLAPS. This leaves little ambiguity on what Airbus wants to happen.
My particular airline SOP has no special case for go around with less than landing flaps.
So, having said all that, what would I do in this situation?
I would call GO AROUND STANDBY FLAPS, and consider myself as knowingly breaking an FCOM procedure, that was badly written and doesn't account for my situation. But better to not follow the FCOM than get the aircraft into an undesired state.
Then, at S speed, call Flaps Zero.