B

[kasulasaiganesh]

Hi @adconley95 

If you disable gi0/5 then what is the status of the link ? Any changes in HSRP ? 

Tell me why you made this much of complexity of this topology? HSRP is very simple.

[MHM Cisco World]

The R2 is standby since it use 175

The R1 is active HSRP since it use 200

Now when you disabled any link on R2 it not effect because the traffic flow through R1 not R2. 

You need track to make R1 priority decrease when one of it link down, this make R2 be active and traffic not drop. 

MHM

[MHM Cisco World]

I make lab days ago same issue check below how I solve it 
R1
interface FastEthernet0/0
ip address 10.0.0.1 255.255.255.0
standby 10 ip 10.0.0.10
standby 10 priority 110
standby 10 preempt
standby 10 track 1 decrement 30
duplex full
!
interface FastEthernet1/0
no ip address
shutdown
speed auto
duplex auto
!
interface FastEthernet1/1
ip address 20.0.0.1 255.255.255.0
standby 20 ip 20.0.0.20
standby 20 priority 110
standby 20 preempt
standby 20 track 2 decrement 30
speed auto
duplex auto

R2

interface FastEthernet0/0
ip address 10.0.0.2 255.255.255.0
standby 10 ip 10.0.0.10
standby 10 priority 90
standby 10 preempt
duplex full
!
interface FastEthernet1/0
no ip address
shutdown
speed auto
duplex auto
!
interface FastEthernet1/1
ip address 20.0.0.2 255.255.255.0
standby 20 ip 20.0.0.20
standby 20 preempt
speed auto
duplex auto