It's all up to the lendlord. If he/she insisted in security despoit, then there is no alternative. I will suggest that you not wire the deposit first instead you can sign the rental agreement with the lend lord first. The lend lord can add a clause to impose a fine if you end up not lending the place. Worst to worst, you can find somewhere to stay temperatory and find a place. I think there are many nice people on this forum whom will be help you if you really are in such a predicament.