The domain shows pr3 to me, not pr5.
The site was most likely 301'd to the registrar, to the host, or to another page (that had pr5), during this downtime you mentioned but it looks like they allready have readjusted it if its now showing as a 3 (which I see it as).
EDIT, looking at google cache of the page shows this
http://74.125.95.132/search?sourceid...hispers.com%2F
which is the cache of BitTraffic. Which also has a pr3, which is probably where your page rank of 3 is coming from (forged).