Might have put them out too early for your latitude. This shit happens often with clones, as they are already mature females when planted. I have a similar issue. I put 12 clones outdoors in mid-May (SF Bay area) and the 2 Corleone Kush clones decided to flower early. The other 10 are vegging like muthas. But these 2, although they have some purty bud sites, are lagging. Even though they are re-vegging, I figure I will lose about 3-4 weeks of veg growth, compared to the plants that never went into flower. So they will double in size, or so. But they smell so nice...lol Aside from the lost yield, I am aiming for nothing larger than 4-5 feet tall. So the lost veg time shouldn't be much an issue.
Bottom line, they should reveg and yield less than they would have if they hadn't had the veg stage interrupted. But they should be fine otherwise
PS: You can flash them at night with an HID light for a minute or two, to ensure that flowering stops.
Good Luck