Your LI is going to have their own reaction to it. Most of them will be supportive especially after they learned you were sent by yourself. You had no backup or help. That has to count for something. They might be pissed that Allience asked you to go in alone. I would believe they know you and know you would never just blow up 300 k Batarians even if your family was killed on Mindoir.

<---try explaining that one
Liara-Ok she is The Shadow Broker!!! She can do pretty much anything. She can dig up intel on any politician she wants. I see her as a major key to helping Shep with his/her tria/investigationl. She might make threats ^^
Garrus-He has your back no matter what. He has played 2 games with you now. He pretty much knows your motives. He hates C-sec, The Council and any political matters. He has seen the crap first hand.
Tali-She will support you no matter what cause well you helped her with her trial. She also has been around you for 2 games now and understands your motives.
Jacob and Miranda-They will probably think..yea that is so typical Allience. They have to stay away though cause they would be interogated due to their connection with Cerberus. Jacob even more so since he deserted Allience.
Jack-If you romanced her the only way she wouldn't be there is if something really important came up she needed to take care of. Like maybe she got that note about her mother thinking she died and she is trying to find her???
masseffect.wikia.com/wiki/Shadow_Broker_Dossiers/Subject_Zero_%28Jack%29 I could see Jack either not give a damn or really cares about Shep if you romanced her.
Thane-Is dealing with the Hanar scientists that are in danger. Curing his people is a big deal and probably spending time with Kolyat. Romanced Thane would be very concerned for Shep of course but knows she has good intentions.
Grunt-On Tuchunka getting to know his Clan but very pissed that they would mess with his battlemaster. Any enemy of his battlemaster is an enemy to him.
Zaeed-Take his money and run.
Kasumi-Needs to disapear because if The Allience got wind of damning evidence she could end up dead herself.
Samara/Morinith-I really don't know if I should hide from her or not LMAO! What would her code say? I also think she is on Omega. Morinith is too busy out killing other species to get her fix.
Mordin-Too busy working on genophage cure possibly?? Would find it very foolish of Allience to send Shep alone to a Batarian prison.
Legion-Busy working on the future for the geth.
LI as the VS-Wow I'm so interested in how they are going to react. My LI is Kaidan so we didn't meet on good terms last time:unsure: I'm sure they have many questions still. Shep did this as a favor to Allience so did they do this on purpose for Cerberus or not? Also I think they will think it was dumb to send Shep alone.
Kenneth Donnley is gonna get thrown out of the trial/investigation while yelling this is BS Again!!

I think it will all boil down to more of The Allience wanting to interrogate Shep on what he/she has been doing with Cerberus but uses blowing up a star system as an excuse to get Shep where they want him/her. They have been dying to interrogate him/her. Kinda like Tali trial. It focused on what she/her father was doing or not doing but it also headed more towards the Admirals own agendas. War vs No war with geth.
Wow I wrote a book...awesome:D