I know exactly what you mean, we are having a warm year. Your trees weren't completly dormant when they were brought in, then a bit of warm storage easily woke them up. Be careful, the weather is about to change. Since your trees are not dormant any more, they won't be able to take sub-freezing temperatures. You have to place a heater if temperatures are going below freezing in your garage. Otherwise, they may not make it if it got too cold.
I use a max-min thermostate to monitor the temperature in there.

Bass

I've had the same problem with my 3 yr. old tree. Even before the leaves were fully out there were 23 figlets. I had to bring it in to a warm sunny place or the first cold day would have killed it. It appears to be doing well, leaves are still sprouting but 4 figs shriveled and dropped off. It looks as if the rest of the figs although getting larger may shrivel too and if they don't drop will be unedible.
Also, several of my Spring "babies" have done the same thing producing 1 to 4 figs, however, these appear to be growing nicely and are about grape size and don't appear to be drying up...yet.

Guess we can't control the weather but any suggestions anyone?

Just rushed to my garage to inspect my 'them' figs,
all seems OK (for now)...
George (NJ).

Hi Bass :Good point about complette dormancy stage.
I do live in Burlington Co.And My fig in the Garage are not sprouting yet.It is an Atached Garage,with no hit.
Yet it gets some warm air from the two Refrigerator and freezeer units,because they run in there.
I looked at all of them and they are alive and well,with a lot of small fruits buds,but that is all,no leafes,at all.
I did however put them inside on 1st of December.
Hpe this will Help.!