Why not try putting your own group together? Personally, when I want nice safe, easy XP, I grab a paladin and duo versus the undead suits of armor in HoH. I'd never turn a rogue away from such a duo, since they'd almost certainly up the kill rate by way more than their share of the xp would cost.
So my suggestion:
check LFG tool for a tank and a 65 shaman (doubt a sub-65 shaman could keep up with the healing efficiently) and ask them to come shred HoH with you. No need for a full group. I'd guess a cleric rather than a shaman would work also, since their heals will probably be able to keep up with unslowed mob DPS, but clerics don't seem to be LFG very often.
Essentially, a rogue brings a lot to an otherwise functional duo. Find someone duo-ing and offer them your services. Might be able to glom onto a necro doing fear kiting also.