Pole Hill - am I too late to respond? I was mindlessly browsing and saw your post!
I second KeyGrip's suggestion - with left rudder trim applied due to a failed engine, you would need right rudder to keep straight in the flare. You need even more right rudder if there is a crosswind from the left. Might explain the high rudder forces you experienced.
Couple of people above have mentioned running out of rudder authority in a crosswind landing. Not a likely scenario, as most light aircraft (and all twins) have huge rudder authority. Running out of aileron authority is much more likely. The cure is easy - land flapless at a higher speed, giving greater authority to your ailerons. But that isn't your problem I suppose...
Cheers,
O8