A possible solution that comes to mind is to set the master_log_position to the next one:
change master to master_log_position = <next_pos>;
start slave;
Or just use sql_slave_skip_counter = 1. If that doesn't work, you may try to parse the binlog (if mysqlbinlog is able to parse it ...):
mysqlbinlog filename > script.sql
Edit the script and remove the part up to and including the long statement. Run the modified script manually on the slave and set the master_logfile to the next binlog:
change master to master_log_file ...;
start slave;
You may also check, just in case, if both master and slave use the same max_allowed_packet.