Clearly BA does not keep a group solely for De-icing. Adequate numbers are cross-trained, and paid, for this function however the numbers were not adjusted to take into account them being assigned away from base VCC rosters, hence the shortfall.
The greater problem will be BA’s ability to recover quickly when the situation eases.
As noted earlier, as the BA leadership broke the disruption agreement by pushing its VCC agenda in precedence to caring for and serving passengers during the November disruption, they cannot be trusted. The good-will account is now empty.