App timer and Disable Softdevice Problems ?

Question

Hi all, 
 I using nrf52832 and segger IDE 
 I am trying disable softdevice and enable it while chip running. In my project, I use RTC1 for app timer. 
 When I disable SD, I will stop app_timer relate to SD follow example ble_app_gzll. 
 This my code : 
 static void disable_GATT_table(void)
{
 NRF_LOG_INFO("Disable GATT Table");

 // Stop functions using SoftDevice before disabling Soft Device
 ble_services_stop();
	
	//wdt_stop();

 // Disable the softdevice stack.
 ble_stack_stop();
	NRF_LOG_INFO("Disable SD");
 //check_source_clock();
 // Request Low frequency clock for RTC2
 nrf_drv_clock_lfclk_request(NULL); 
	NRF_LOG_INFO("Request Low frequency clock");
	//check_source_clock();	
} 
 static void ble_services_stop(void)
{
 uint32_t err_code;

 // Stop any impending connection parameters update.
 err_code = ble_conn_params_stop();
 APP_ERROR_CHECK(err_code);

	//app_timer_stop_all();
 // Stop application timers.
 err_code = app_timer_stop(m_bonding_timeout);
 APP_ERROR_CHECK(err_code);

 err_code = app_timer_stop(m_update_service_id);
 APP_ERROR_CHECK(err_code);
	
} 
 void uart_start(uart_data_handle_t p_data_handler)
{
 uint32_t err_code;
 app_uart_comm_params_t const comm_params =
 {
 .rx_pin_no = RX_PIN_NUMBER,
 .tx_pin_no = TX_PIN_NUMBER,
 .rts_pin_no = RTS_PIN_NUMBER,
 .cts_pin_no = CTS_PIN_NUMBER,
 .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
 .use_parity = false,
#if defined (UART_PRESENT)
 .baud_rate = NRF_UART_BAUDRATE_115200
#else
 .baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
 };

 NVIC_ClearPendingIRQ(UART_RX_HANDLE_IRQn);
 NVIC_SetPriority(UART_RX_HANDLE_IRQn, UART_RX_HANDLE_IRQPriority);
 NVIC_EnableIRQ(UART_RX_HANDLE_IRQn);
 
 p_uart_data_handler = p_data_handler;

 fifo_init(&m_transmit_fifo); 
 fifo_init(&m_receive_fifo);

 // Create timers.
 err_code = app_timer_create(&m_wakeup_ecu_timeout,
 APP_TIMER_MODE_SINGLE_SHOT,
 wakeup_ecu_timeout);
 APP_ERROR_CHECK(err_code);
 
 err_code = app_timer_create(&m_send_msg_timeout,
 APP_TIMER_MODE_SINGLE_SHOT,
 send_msg_timeout);
 APP_ERROR_CHECK(err_code);
#if (defined BONDING_WHEN_START_UP) && (BONDING_WHEN_START_UP == true) 
 // Create timers.
 err_code = app_timer_create(&m_uart_bonding_timeout,
 APP_TIMER_MODE_SINGLE_SHOT,
 uart_bonding_timeout);
 APP_ERROR_CHECK(err_code); 
#endif
 app_uart_buffers_t buffers;

 buffers.rx_buf = rx_buf;
 buffers.rx_buf_size = sizeof (rx_buf);
 buffers.tx_buf = tx_buf;
 buffers.tx_buf_size = sizeof (tx_buf);
 err_code = app_uart_init(&comm_params, &buffers, uart_event_handle, APP_IRQ_PRIORITY_LOWEST);
 APP_ERROR_CHECK(err_code);

 wakeup_gpio_int_init();
 uart_initialized = true;
} 
 In uart_start, I created 2 app_timer. If I comment this app_timer. My process dis SD and en SD run normal. 
 If I don't comment 2 app_timer. I wil have troubles with function 
 expired_timers_handler in app_timer.c and program will run forever in loop while (mp_timer_id_head != NULL) 
 If in function ble_services_stop(), I add line : app_timer_stop_all(); 
 I will not encounter this problem with app timer. But I don't want disable all app_timer because I will have app_timer repeat. So I only want disable app_timer relate with SD, after reinit it. 
 I need 2 app_timer in uart.c . So how I resolve problem with expired_timers_handler 
 Thank very much!!!