[Arakon]

yes, the laser will have been effected already.
how bad depends on how long the neo was installed. you can test it by burning and running a dvd-r game on it. if it works well, get rid of the neo 2 and install the messiah before more damage is caused. if it skips (use decent media like verbatim, and burn at 1x to test), then the laser is already having problems.