This screwed me over in India last week. $25/MB is awful. Thank god I enabled RoamFreely as soon as I got the text message that $50 had been charged. Didn't even think to check before I left, had the global plan on exactly for occasions like this. Apparently I missed the cancellation memo.
EDIT: FLyAO2, I also have a corporate association. Will call Verizon and yell a bit. Am up for upgrade (waiting on Thunderbolt) but I think switching to AT&T for Atrix is a credible threat.