No, don't put them back. That is a little too much shock for them to be transplanted twice in such a short time.
What you did was a perfectly natural response, and to my knowledge, unless specifically protected, was not even illegal(unless, of course, you crossed the border). Dionaea in the US is protected as are a few Sarracenia and P. ionantha, but no Drosera. Honestly, I am shooting from the hip as I don't know Canada's laws.
If these are D. rotundifolia(flat rosette?), some alternatives would be:
1) Collect some seed if available-that way you don't disturb the plants
2) Collect a few leaves and use them as cuttings to produce new plants-again, leaving the parent plants in the wild
Plants with location data are always sweeter than just, "D. rotundifolia" so try and propagate the plants you took and trade seed, propagated plants or get the seed into a seed bank.
I'm not trying to advocate wild collecting in general, but collecting a little bit of material can be down without harm to the population.
Regards,
Joe