If you don't want to execute the plugin on every Maven run you can define a profile for it. The following example only executes the plugin if you run Maven with a -Djibx=true option.
<profiles>
<profile>
<id>jibx</id>
<activation>
<activeByDefault>false</activeByDefault>
<property>
<name>jibx</name>
<value>true</value>
</property>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.jibx</groupId>
<artifactId>maven-jibx-plugin</artifactId>
<version>1.2.3-SNAPSHOT</version>
<executions>
<execution>
<goals>
<goal>bind</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>