My Wifes 09 FR has just started doing this as well, since the cold weather has started it seems?
Once it's been opened from the inside once it will open/ close, lock/unlock fine from the fob until it's been standing for a while again. Which makes me think there's something mechanical that's a bit stiff/ seized after it's been left standing.
Are there any components of the mechanism that might be worse affected by the cold/ wet.
I guess i'm wondering if a bit of WD40 somewhere might ease the mechanism, or is it more of an electrical issue?