You sack a manager when you lose all confidence they can ever turn it around. That's what did it for Goodwin and Robson. I don't believe Thelin has reached the stage of running out of ideas yet and I'm keen to see the next few months.
Aye, the five wins in 31 is really poor. But forget last season. Different team now, and it took until transfer deadline day to add much needed quality. This season is a bigger judgement of him than last season.
We have six players currently not fully match fit (Nisbet, Lazetic, Karlsson, Gyamfi, Armstrong, Bilalovic).
We have Yengi, Milanovic, Aouchiche still settling in. Yengi in particular has had a lot of criticism, when in reality he's our third choice striker who was thrust in too early due to lack of bodies.
Had all those players been here in July, had a full pre-season, and been available from day one of the season, then it's a different story. Obviously football isn't as neat and tidy as that.
Earlier in this thread - I think before the cup final - I said it would be interesting to see who makes the most improvement this season out of Hibs, Dundee United and Aberdeen - the teams that finished above us, but still have the same managers.
Hibs have had a few plaudits, but haven't won a home game this season (six games).
Dundee United have also had a few plaudits, but they've only beat Strassen and Dundee this season.
The top performing sides were the ones who had League Cup games to help build momentum - Hearts, St Mirren and Motherwell. But it's fine margins with them too. Motherwell haven't actually won a league game yet, but people are raving about them.
To answer your original question (I'll get there eventually), unless the season becomes a disaster and it appears obvious Thelin isn't up to it, then it becomes a conversation. But I'm confident that won't happen.