SureAI

When I got to the objective "Bring the drawing of the glyphs to Archmagister Merrayil", and went to speak to him, the dialogue began but I think I had a bounty on me and was attacked. Now I go back but they're all just standing there, if I attempt to speak to them all I get is "This person is busy", and I can't advance. What can I do?

Mhmm, we know that somehow the player gets a bounty - but we don't know why.
I would recommend loading an older savegame before you were attacked at the suntemple. Go to a guard and pay the bounty.

If that does not work attach your savegame:

Savegames are located here: documents\mygames\skyrim\saves
A savegame consists of two files: one .skse file and one .ess file (please zip them together)
Thanks.