Petiilant or still

Bottling day for the Domras Cup. Got a mel that I had stored under CO2 for quite a while before I recently changed over to nitrogen. It was pretty highly carbed a few months ago but has tamed down under the nitrogen. When I fill a bottle there is a bit of foam at the neck, about a half inch, indicates to me its still a little carbed, but swirled in a sample glass there's zero bubbles. How bad would an entry get dinged entered as pettilant if its still and vice versa? Which is worse?

I was bottling several 750 ml. I normally keep the nitrogen disconnected after filling the headspace and then use only as needed. All kegs were topped with gas at the same pressure setting right before filling, but this mel keg dispensed like double the flow rate of the others. But it wasn't the large bubbles you might get just from agitation, it was carbonation bubbles. Thought it was strange that I got nothing in the sample glass. Must be the N dissipated. Since this contest they serve the judges poured glasses I'll have to taste it fresh today and see if its evident on the tongue. Bottling days exact a heavy toll when you've only got one dispense tap. I call it 'cleaning out the line'.

Thank you for the replies.