The mgb stay lower attachment have nothing to do with MRH removal/installation. In fact unless you remove the mgb stays for a scheduled inspection they are often not even desturbed for mgb removal except for the upper pins.
The pins are a close tolerance fit safetyied by the nappy pins so that if they move they cant move beyond the safety pins. So no they wont just fall out especially seeing they carry vertical loads after 1 or 2 flights. However over time and the inevitable torque reaction off the strut it will work loose eventually. How long this will take is anybodies guess but it will be more than a few flights.
I can not remember the maintenance manual instructions on the 332 but on the 350, 120 you can fit the upper attachment bolts in their case anyway round but the lower must be in the direction indicated in the manual which funnily enough is in the torque opposing direction so if they come loose somehow they will work themselves towards the stay not away.
For those continuing to compare to REDL pls read the report and the full report on that tragic accident and do not miss the parts referring to chip warnings, HUMS thresholds adjusted, etc. It did not happen out of the blue! Is someone to blame? No but loads of human factors and system failures were identified and it did lead to increased awareness to follow OEM instructions and improve comms in writing with OEM's to prevent a reoccurance.
If we all could take the time to actually read the full reports on all 332/225 accidents and/or incidents and make sure we know where what is on the aircraft then maybe we could have more intelligent debates without emotion from all speculating and argueing for and against on here but please go read the actual reports and not the newspapers first.