Fixed dhcp host to automatically expire any lease

I have the following situation: Multiple offices with multiple firewall/dhcp servers.

Every time the IT team of some office plugs a new network printer i need to create a fixed-address entry, and delete the lease that this printer already got before this reservation happens. Sometimes i get warned that the printer is already online and this fixed ip is needed by other application(cups server).

Is there a way to "auto expire" a lease when you add a fixed-address? On the current situation i need to manually remove the lease or wait the 3 hours that is my configured max-lease-time.

Why i want this? To make more dinamic the creation of new fixed address hosts through ssh without the need of login on that server and erase a lease(or edit 2 files every time). dhcp-relay is not an option cause we have a circuit on our isp that will not support it.

Snip of some config files

ddns-update-style ad-hoc;
authoritative;
allow bootp;
deny declines;
deny duplicates;
option domain-name "xxx.net";
option domain-name-servers y.y.y.y, y.y.y.2;
option interface-mtu 1500;
option ntp-servers ntp.xxx.xxx.xxx;
default-lease-time 7200; # default lease 2 hours
max-lease-time 10800; # max lease 3 hours
one-lease-per-client true; # 1 lease per client

subnet 10.0.0.0 netmask 255.255.255.0 {
        range 10.0.0.100 10.0.0.200;
        option routers 10.0.0.254;
        option broadcast-address 10.0.0.255;
}


host printserver001 {
        hardware ethernet 00:24:81:XX:XX:XX;
        fixed-address 10.0.0.30;
}

Solution that i already tried: Create a class called printers, add all fixed address to that class and add a deny members of "printers" on that ip range/pool. It will not work and the printer will still get the lease until is expired.

Solution that i think might work: Zero the default-lease-time parameter. I just don´t know if the default behavior of all printers when they restart will be request the same lease or send a new DHCPREQUEST, and how isc-dhcp will manage this request.

Edit 1: Using omapi does not work either. I´m trying to delete a lease only knowing the mac address, and this is what i get when i try to delete it:

omshell << END_OF_INPUT
server localhost
port 7911
key omapi_key my_key_xxxxxxxxxxxxxxxxxx==
connect
new lease
set hardware-address = 00:e0:c5:4e:2d:a4
open
remove
END_OF_INPUT


> can't destroy object: not implemented
obj: lease
hardware-address = 00:e0:c5:4e:2d:a4
state = 00:00:00:02
ip-address = c0:a8:03:e6
dhcp-client-identifier = 01:00:e0:c5:4e:2d:a4
client-hostname = "xxxxx03"
subnet = 00:00:00:06
pool = 00:00:00:07
hardware-type = 00:00:00:01
ends = 53:72:14:ce
starts = 53:71:f8:ae
tstp = 00:00:00:00
tsfp = 00:00:00:00
atsfp = 00:00:00:00
cltt = 53:71:f8:ae
flags = 00
ddns-fwd-name = "xxxxx03.xxxxx.net"
ddns-rev-name = "xx.xx.xx.192.in-addr.arpa."

I´m using ISC-dhcp 3.1.1.

Any ideas?