I will leave aside for now the issue of strike-busting, although I have some very strongly-held view on the issue.
Are Monarch crews operating to the same schedule as the Aer Lingus guys are expected to operate? If not, because of legality/safety issues, it would suggest that AL could save themselves a lot of aggro by admitting they have already lost.
A minimum of ten hours rest is, quite simply, not enough, and is DANGEROUS.
To attempt to rewrite a contract without the agreement of both parties is illegal.
To suspend staff for sticking to their current agreement with you is indefensible.
It's well past time that the IAA, which has shown itself time and again to be a toothless, ineffective and over-pliable rubber stamp was overhauled by the Irish Government. Failing that, Ireland should be expelled from ICAO.