I've been trying to get my masternode up and running again (making sure watchdog is functioning).
My sanctuary wallet was indeed stuck on a certain block and wouldn't sync. But I've reindexed both and it seems I'm on the right chain right now (both wallets are on the same block).
Controller wallet:

{
"version": 1000506,
"protocolversion": 70708,
"walletversion": 61000,
"wallet_fullversion": "1.0.5.6",
"balance": 38514484.00745234,
"privatesend_balance": 0.00000000,
"blocks": 41330,
"timeoffset": -2,
"connections": 3,
"proxy": "",
"difficulty": 0.1980807012241197,
"testnet": true,
"keypoololdest": 1507285625,
"keypoolsize": 1001,
"paytxfee": 0.00000000,
"relayfee": 0.00010000,
"errors": ""
}
Sanctuary wallet:
{
"version": 1000508,
"protocolversion": 70708,
"walletversion": 61000,
"wallet_fullversion": "1.0.5.8",
"balance": 0.00000000,
"privatesend_balance": 0.00000000,
"blocks": 41330,
"timeoffset": 0,
"connections": 8,
"proxy": "",
"difficulty": 0.1980807012241197,
"testnet": true,
"keypoololdest": 1508425662,
"keypoolsize": 1001,
"paytxfee": 0.00000000,
"relayfee": 0.00010000,
"errors": ""
}
The only thing now is that the 'masternodelist' command gets different results on my controller and sanctuary wallet.
Controller wallet:
17:21:14

{
"04ca4bd54153476e6d19b72dc26bc27b74cdbbd687aea07c6cc1cd2182beab60-1": "NEW_START_REQUIRED",
"a23321871670924fa669c26284aeb9b36987d6bb3d7a590eaf2b5406b85201f4-1": "ENABLED",
"a27ae7dcc93df0ff266d2f11cb906f4929b7ad7d6b46bc98c192ac7998aa1058-1": "WATCHDOG_EXPIRED",
"8ff3d83216612e2c79a36c5f66f191b34a07eb1d01600b104a76b3151de9e7f6-1": "NEW_START_REQUIRED",
"78a235e8d3427b7fec1a0f3635cf3aeb2dbf7d0d53c44578815060d80280a271-1": "ENABLED",
"7b3873de1969b087f63cd287c64694b14250aecf7779c67f68691533a6616f3c-1": "NEW_START_REQUIRED",
"d183b913e7a4b95c0202bf15d296e00bbdf0bedce317e340985a2c78af06cba4-1": "ENABLED",
"404f50700e2ffc8c4adb76bea92fb572584b1f3e24ec736d6883a64cc88417fb-1": "ENABLED",
"be3eaf8322909bbb150d89058bf261f0a2bf96369c8928313a3d69e2d5087add-1": "ENABLED",
"e413e134f7ecb6388ddfe401870f1e0ba602479abb8de8a5bf78c59c4087ee28-1": "NEW_START_REQUIRED",
"b0cfdfa2194556e211099bc620a7e27487958aa5774db0c78ded0f839e3105d2-1": "NEW_START_REQUIRED",
"c5a8405cbc39dd97004a64c1db586313ed25f3c4553ca59a0bdad30dd0c551d5-1": "NEW_START_REQUIRED",
"44d550fef16c8bc5e340599cddbd6d98736218e1900f92b4625768e5830abfd0-1": "NEW_START_REQUIRED",
"847be5b647856e9b030d785d7bc82f146362371a28663348e7a3d28df3e38c55-1": "ENABLED"
}
Sanctuary wallet:
{
"04ca4bd54153476e6d19b72dc26bc27b74cdbbd687aea07c6cc1cd2182beab60-1": "NEW_START_REQUIRED",
"a23321871670924fa669c26284aeb9b36987d6bb3d7a590eaf2b5406b85201f4-1": "ENABLED",
"a27ae7dcc93df0ff266d2f11cb906f4929b7ad7d6b46bc98c192ac7998aa1058-1": "NEW_START_REQUIRED",
"8ff3d83216612e2c79a36c5f66f191b34a07eb1d01600b104a76b3151de9e7f6-1": "NEW_START_REQUIRED",
"78a235e8d3427b7fec1a0f3635cf3aeb2dbf7d0d53c44578815060d80280a271-1": "NEW_START_REQUIRED",
"7b3873de1969b087f63cd287c64694b14250aecf7779c67f68691533a6616f3c-1": "NEW_START_REQUIRED",
"d183b913e7a4b95c0202bf15d296e00bbdf0bedce317e340985a2c78af06cba4-1": "NEW_START_REQUIRED",
"404f50700e2ffc8c4adb76bea92fb572584b1f3e24ec736d6883a64cc88417fb-1": "NEW_START_REQUIRED",
"be3eaf8322909bbb150d89058bf261f0a2bf96369c8928313a3d69e2d5087add-1": "NEW_START_REQUIRED",
"b0cfdfa2194556e211099bc620a7e27487958aa5774db0c78ded0f839e3105d2-1": "NEW_START_REQUIRED",
"e413e134f7ecb6388ddfe401870f1e0ba602479abb8de8a5bf78c59c4087ee28-1": "NEW_START_REQUIRED",
"44d550fef16c8bc5e340599cddbd6d98736218e1900f92b4625768e5830abfd0-1": "NEW_START_REQUIRED",
"c5a8405cbc39dd97004a64c1db586313ed25f3c4553ca59a0bdad30dd0c551d5-1": "NEW_START_REQUIRED",
"847be5b647856e9b030d785d7bc82f146362371a28663348e7a3d28df3e38c55-1": "ENABLED"
}
I am 'a23321871670924fa669c26284aeb9b36987d6bb3d7a590eaf2b5406b85201f4' btw.