The concept of a "far left" is IMO just propaganda that both the Republicans and the Democrats use to discount the positions of people who do not support a government by the corporation and for the corporations. The label is used to indicate that any position not center right is an extreme position.  

If there's some appeals process but the dean isn't on the appeals committee, tell him to pucker up and kiss it, passionately, to get a letter of even nominal support from the dean.

Also, do any professors remember your brother? Since professors and admin mix like water and sodium, maybe a few letters from professors.

But be careful there... I wrote a letter of rec once that said "so and so took my class and earned a B. Sincerely..." This was after telling the person that I didn't feel comfortable writing a letter for them. What more?

Heck, tell yr bro to email me, and we can try to IM beforehand.

Oh, dress... try not to be himself. Dress in at least a collared shirt, long pants, and shoes-- not sandals, crocks, or sneakers (unless that's all he has). A shirt and tie would not be inappropriate. Bring in a file with any letters, including the apology. Put statements in the file from the brother concerning the issues with anxiety and depression he had after his pet goldfish died/penis fell off/got turned down by the French Foreign Legion/ whatever can be said that would indicate a reason for under-performance.  Furthermore, have him write a 500-750 word essay about the change in his level of maturity, understanding of the discipline needed, etc. etc. ( some copies may not hurt if there is an appeals committee).

Tell him also to be willing to accept either conditional admission or academic probation. If he gets one of those, to earnestly thank the dean for the opportunity to prove his mettle. He should also offer to be a peer tutor in any area he's capable of doing. Free labor? that's cost containment, school admins love it.

--and call the office to schedule an appointment! Show up 10-15 minutes early! and with deodorant, freshly-shaven, and in pressed-- yes pressed-- clothes. This meeting may be more important than any job interview he'll have in the future.

It might sound lame, but it isn't if he's sincere. Also, by saying those and writing those, he might decide he owns those sentiments. shoot me an email, and I'll send my phone number. I have a protoge who's in grad school after a stint in federal prison for drug trafficking. He turned his life around, was able to get a city job as a garbage collector, and the city paid for his B.A., and currently pays for his master's program.

Augmentin will be my anti-biotic, and a steroid cream to get the welts down, see him again in two weeks.  Doc doesn't seem concerned, no fever is a huge positive sign.  "I know it looks bad, but you'll be allright" is the money quote.

I feel a lot better about it now, I'm taking the whole day and vegging, walking is a bit of a chore.