You can definitely take shots in any angles you want on any replay, either be it from someone else or your very own :) …I have used replays from other community members to see if it works and it did so go ham on those pictures haha
Yes, I just tried it using a second Infinite Flight Account of mine that I once used. My main account has a subscription, my second account hasn’t. I can’t open the Pro Replay Files of my main account using my second account. However, I’m still able to open my “Free” Replays.