I just went through the entire game and I finish it without the crash reported 
in this ticket (e.g. no crash during face-to-face talk attempt).

The ending: 
1) The server update room is still lock but player can escape it via portal that 
was created by Spencer.
2) If the dialog with Spencer is ended with "I will leave now", the game 
continues (e.g. I can use portal and jump to Town and continue)
3) If the dialog with Spencer is ended with "I'm ready, just tell what I should 
do" (or similar), the game ends but I would expect it to continue.