Single blog Error 310 ERR_TOO_MANY_REDIRECTS

I have one site on our network that just stopped loading with a too many redirect error.
Is the url..

I have compared his site options and user_meta info.
I don't see anything out of the ordinary.
I disabled most of the plugins on his site and tried switching themes.

I have the
Multi-Domain, Domain Mapping, Affiliate lite, supporter running.

I don't see anything in the error log in relation to this.
I switched the WP cache in wp-config off.
Any thoughts would be greatly appreciated.

I really am not sure what I should be looking for I have not seen this issue before.
I can login to his wp-admin with no problems.
Any input is appreciated.