Oh man, that would totally suck if it happened to me. There is a silver lining for me though, you just reminded me of this option. Had some great experiences so far in guided NF as seeker, so tonight or tomorrow it's time to seek some Raid guides. Fingers crossed. Hopefully Bungie will implement some sort of time allowance to rejoin the party, be it due to inactivity, losing internet, etc. 5 mins should be plenty enough IMO. Good luck!