In the guide, it suggests you use a Law teletab to get to Entrena. That actually doesn't work; a monk teleports next to you, stuns you, and sends you back to the boat at port Sarim.

Is this if you're wearing armor/weapons etc in your inventory?

I had nothing that would cause this.

 

I went back without the pouch and they let me on. Also, if I get them to search me with the pouch they would notice the pouch,

Ah I see, if you haven't finished the quest just yet, are you able to repeat the actions and screenshot it? Just so I can get some verification, or if anyone else reading this is able to re-produce the situation too.

I recently just did Devious Minds and I can see no evidence to support this. I used a law altar teleport and nothing happened. The quest guide is fine as is.